diff --git a/dev/tools/phan/config.php b/dev/tools/phan/config.php
index 00f9478aed9..d45a1e422c0 100644
--- a/dev/tools/phan/config.php
+++ b/dev/tools/phan/config.php
@@ -461,7 +461,7 @@ return [
 
 		'PhanPluginUnknownClosureReturnType',	// When we use closure (we must avoid), we do not have PHP doc
 
-		// 'PhanPluginUnknownArrayMethodParamType',	// All fixed, except in api_*
+		// 'PhanPluginUnknownArrayMethodParamType',	// All fixed
 		// 'PhanPluginUnknownArrayMethodReturnType',	// All fixed, except in api_*
 		// 'PhanUndeclaredGlobalVariable',			// Helps identify variables that are not set/defined - add '@phan-var-force TYPE $varname' in tpl or includes to help type the variable
 		// 'PhanPluginUnknownObjectMethodCall',	// False positive for some class. Is enabled in config_extended only.
diff --git a/dev/tools/phan/config_extended.php b/dev/tools/phan/config_extended.php
index 41be1c5f8ad..fa84a395df7 100644
--- a/dev/tools/phan/config_extended.php
+++ b/dev/tools/phan/config_extended.php
@@ -97,7 +97,7 @@ $config['suppress_issue_types'] = [
 		'PhanPluginRedundantAssignment',				// Not essential, useless
 		'PhanPluginDuplicateCatchStatementBody',  // Requires PHP7.1 - 50+ occurrences
 
-		'PhanPluginUnknownArrayMethodParamType',	// All fixed, except in api_* at this time
+		// 'PhanPluginUnknownArrayMethodParamType',	// All fixed
 		'PhanPluginUnknownArrayMethodReturnType',	// All fixed, except in api_* at this time
 		'PhanTypeSuspiciousNonTraversableForeach',  // Reports on `foreach ($object as $key => $value)` which works without php notices, so we ignore it because this is intentional in the code.
 ];
diff --git a/htdocs/adherents/class/api_members.class.php b/htdocs/adherents/class/api_members.class.php
index e78430ffbfd..a08dc6cc2db 100644
--- a/htdocs/adherents/class/api_members.class.php
+++ b/htdocs/adherents/class/api_members.class.php
@@ -661,6 +661,9 @@ class Members extends DolibarrApi
 		if (!DolibarrApiAccess::$user->hasRight('adherent', 'cotisation', 'creer')) {
 			throw new RestException(403);
 		}
+		if (is_numeric($start_date) || !is_numeric($end_date) || !is_numeric($amount)) {
+			throw new RestException(422, 'Malformed data');
+		}
 
 		$member = new Adherent($this->db);
 		$result = $member->fetch($id);
@@ -668,7 +671,7 @@ class Members extends DolibarrApi
 			throw new RestException(404, 'member not found');
 		}
 
-		return $member->subscription($start_date, $amount, 0, '', $label, '', '', '', $end_date);
+		return $member->subscription((int) $start_date, (float) $amount, 0, '', $label, '', '', '', (int) $end_date);
 	}
 
 	/**
diff --git a/htdocs/api/class/api_access.class.php b/htdocs/api/class/api_access.class.php
index f01a6d56538..304a2b690c5 100644
--- a/htdocs/api/class/api_access.class.php
+++ b/htdocs/api/class/api_access.class.php
@@ -2,7 +2,7 @@
 /* Copyright (C) 2015   Jean-François Ferry     <jfefe@aternatik.fr>
  * Copyright (C) 2016	Laurent Destailleur		<eldy@users.sourceforge.net>
  * Copyright (C) 2023	Ferran Marcet			<fmarcet@2byte.es>
- * Copyright (C) 2024		MDW							<mdeweerd@users.noreply.github.com>
+ * Copyright (C) 2024-2025	MDW					<mdeweerd@users.noreply.github.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -44,7 +44,6 @@ use Luracast\Restler\RestException;
 
 /**
  * Dolibarr API access class
- *
  */
 class DolibarrApiAccess implements iAuthenticate
 {
@@ -56,12 +55,12 @@ class DolibarrApiAccess implements iAuthenticate
 	public $db;
 
 	/**
-	 * @var array $requires	role required by API method		user / external / admin
+	 * @var array	role required by API method		user / external / admin
 	 */
 	public static $requires = array('user', 'external', 'admin');
 
 	/**
-	 * @var string $role		user role
+	 * @var string		user role
 	 */
 	public static $role = 'user';
 
@@ -158,7 +157,7 @@ class DolibarrApiAccess implements iAuthenticate
 					throw new RestException(503, 'Error when fetching user api_key : More than 1 user with this apikey');
 				}
 			} else {
-				throw new RestException(503, 'Error when fetching user api_key :'.$this->db->error_msg);
+				throw new RestException(503, 'Error when fetching user api_key :'.$this->db->error);
 			}
 
 			if ($login && $stored_key != $api_key) {		// This should not happen since we did a search on api_key
@@ -248,7 +247,7 @@ class DolibarrApiAccess implements iAuthenticate
 	/**
 	 * Verify access
 	 *
-	 * @param   array $m Properties of method
+	 * @param   array{class:array{DolibarrApiAccess:array{properties:array{requires?:bool}}}} $m Properties of method
 	 *
 	 * @access private
 	 * @return bool
diff --git a/htdocs/api/class/api_documents.class.php b/htdocs/api/class/api_documents.class.php
index 71b42aea8a8..e24ed7924b8 100644
--- a/htdocs/api/class/api_documents.class.php
+++ b/htdocs/api/class/api_documents.class.php
@@ -54,6 +54,8 @@ class Documents extends DolibarrApi
 	 * @param   string  $modulepart     Name of module or area concerned by file download ('facture', ...)
 	 * @param   string  $original_file  Relative path with filename, relative to modulepart (for example: IN201701-999/IN201701-999.pdf)
 	 * @return  array                   List of documents
+	 * @phan-return array{filename:string,content-type:string,filesize:false|int,content:string,encoding:string}
+	 * @phpstan-return array{filename:string,content-type:string,filesize:false|int,content:string,encoding:string}
 	 *
 	 * @url GET /download
 	 *
@@ -123,6 +125,8 @@ class Documents extends DolibarrApi
 	 * @param	string	$doctemplate	Set here the doc template to use for document generation (If not set, use the default template).
 	 * @param	string	$langcode		Language code like 'en_US', 'fr_FR', 'es_ES', ... (If not set, use the default language).
 	 * @return  array                   List of documents
+	 * @phan-return array{filename:string,content-type:string,filesize:false|int,content:string,langcode:string,template:?string,encoding:string}
+	 * @phpstan-return array{filename:string,content-type:string,filesize:false|int,content:string,langcode:string,template:?string,encoding:string}
 	 *
 	 * @url PUT /builddoc
 	 *
@@ -306,6 +310,8 @@ class Documents extends DolibarrApi
 	 * @param	string	$sortfield		Sort criteria ('','fullname','relativename','name','date','size')
 	 * @param	string	$sortorder		Sort order ('asc' or 'desc')
 	 * @return	array					Array of documents with path
+	 * @phan-return array<array<string,int|string>>
+	 * @phpstan-return array<array<string,int|string>>
 	 *
 	 * @url GET /
 	 *
@@ -621,6 +627,7 @@ class Documents extends DolibarrApi
 					for ($i = 0 ; $i < $count ; $i++) {
 						foreach ($ecmfile->lines as $line) {
 							if ($filearray[$i]['name'] == $line->filename) {
+								// Next line converts EcmFilesLine properties to array
 								$filearray[$i] = array_merge($filearray[$i], (array) $line);
 							}
 						}
@@ -666,7 +673,7 @@ class Documents extends DolibarrApi
 	 * @param   int 	$createdirifnotexists  	Create subdirectories if the doesn't exists (1 by default)
 	 * @param   int     $position               Position
 	 * @param   string  $cover                  Cover info
-	 * @param   array   $array_options          array of options
+	 * @param   array<string,string>   $array_options          array of options
 	 * @return  string
 	 *
 	 * @url POST /upload
@@ -791,7 +798,7 @@ class Documents extends DolibarrApi
 			if (is_object($object)) {
 				if ($fetchbyid) {
 					// @phan-suppress-next-line PhanPluginSuspiciousParamPosition
-					$result = $object->fetch($ref);
+					$result = $object->fetch((int) $ref);
 				} else {
 					$result = $object->fetch(0, $ref);
 				}
@@ -965,7 +972,9 @@ class Documents extends DolibarrApi
 	 *
 	 * @param   string  $modulepart     Name of module or area concerned by file download ('product', ...)
 	 * @param   string  $original_file  Relative path with filename, relative to modulepart (for example: PRODUCT-REF-999/IMAGE-999.jpg)
-	 * @return  array                   List of documents
+	 * @return  array                   Success code
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url DELETE /
 	 *
diff --git a/htdocs/api/class/api_login.class.php b/htdocs/api/class/api_login.class.php
index ab7db1569eb..eba65d098d8 100644
--- a/htdocs/api/class/api_login.class.php
+++ b/htdocs/api/class/api_login.class.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2015   	Jean-François Ferry     <jfefe@aternatik.fr>
  * Copyright (C) 2016		Laurent Destailleur		<eldy@users.sourceforge.net>
- * Copyright (C) 2024		MDW						<mdeweerd@users.noreply.github.com>
+ * Copyright (C) 2024-2025	MDW						<mdeweerd@users.noreply.github.com>
  * Copyright (C) 2024		Frédéric France			<frederic.france@free.fr>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -60,6 +60,8 @@ class Login
 	 * @param   string  $entity			Entity (when multicompany module is used). '' means 1=first company.
 	 * @param   int     $reset          Reset token (0=get current token, 1=ask a new token and canceled old token. This means access using current existing API token of user will fails: new token will be required for new access)
 	 * @return  array                   Response status and user token
+	 * @phan-return array{success:array{code:int,message:string,token:array{pass_encrypted:string,pass_encoding:string}|string,entity:int}}
+	 * @phpstan-return array{success:array{code:int,message:string,token:array{pass_encrypted:string,pass_encoding:string}|string,entity:int}}
 	 *
 	 * @throws RestException 403 Access denied
 	 * @throws RestException 500 System error
@@ -84,6 +86,8 @@ class Login
 	 * @param   string  $entity			Entity (when multicompany module is used). '' means 1=first company.
 	 * @param   int     $reset          Reset token (0=get current token, 1=ask a new token and canceled old token. This means access using current existing API token of user will fails: new token will be required for new access)
 	 * @return  array                   Response status and user token
+	 * @phan-return array{success:array{code:int,message:string,token:array{pass_encrypted:string,pass_encoding:string}|string,entity:int}}
+	 * @phpstan-return array{success:array{code:int,message:string,token:array{pass_encrypted:string,pass_encoding:string}|string,entity:int}}
 	 *
 	 * @throws RestException 403 Access denied
 	 * @throws RestException 500 System error
@@ -138,7 +142,7 @@ class Login
 		$token = 'failedtogenerateorgettoken';
 
 		$tmpuser = new User($this->db);
-		$tmpuser->fetch(0, $login, 0, 0, $entity);
+		$tmpuser->fetch(0, $login, '0', 0, $entity);
 		if (empty($tmpuser->id)) {
 			throw new RestException(500, 'Failed to load user');
 		}
diff --git a/htdocs/api/class/api_setup.class.php b/htdocs/api/class/api_setup.class.php
index f888c5a1efe..2f0bcd86001 100644
--- a/htdocs/api/class/api_setup.class.php
+++ b/htdocs/api/class/api_setup.class.php
@@ -6,7 +6,7 @@
  * Copyright (C) 2018-2024	Frédéric France         <frederic.france@free.fr>
  * Copyright (C) 2018-2022  Thibault FOUCART        <support@ptibogxiv.net>
  * Copyright (C) 2024       Jon Bendtsen            <jon.bendtsen.github@jonb.dk>
- * Copyright (C) 2024		MDW						<mdeweerd@users.noreply.github.com>
+ * Copyright (C) 2024-2025	MDW						<mdeweerd@users.noreply.github.com>
  *
  *
  * This program is free software; you can redistribute it and/or modify
@@ -65,7 +65,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the type must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.label:like:'SO-%')"
 	 * @return array				List of extra fields
-	 * @phan-return Object[]		List of extra fields
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET actiontriggers
 	 *
@@ -137,6 +138,8 @@ class Setup extends DolibarrApi
 	 * @url     GET dictionary/ordering_methods
 	 *
 	 * @return array [List of ordering methods]
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @throws	RestException	400		Bad value for sqlfilters
 	 * @throws	RestException	403		Access denied
@@ -199,6 +202,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Payment type is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters SQL criteria to filter with. Syntax example "(t.code:=:'OrderByWWW')"
 	 * @return array [List of ordering reasons]
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/ordering_origins
 	 *
@@ -266,6 +271,8 @@ class Setup extends DolibarrApi
 	 * @url     GET dictionary/payment_types
 	 *
 	 * @return array [List of payment types]
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @throws	RestException	400		Bad value for sqlfilters
 	 * @throws	RestException	403		Access denied
@@ -331,6 +338,8 @@ class Setup extends DolibarrApi
 	 * @param string    $filter     To filter the regions by name
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array                List of regions
+	 * @phan-return Cregion[]
+	 * @phpstan-return Cregion[]
 	 *
 	 * @url     GET dictionary/regions
 	 *
@@ -395,6 +404,8 @@ class Setup extends DolibarrApi
 	 *
 	 * @param 	int       $id       ID of region
 	 * @return 	Object 				Object with cleaned properties
+	 * @phan-return Cregion
+	 * @phpstan-return Cregion
 	 *
 	 * @url     GET dictionary/regions/{id}
 	 *
@@ -411,6 +422,8 @@ class Setup extends DolibarrApi
 	 *
 	 * @param 	string    $code     Code of region
 	 * @return 	Object 				Object with cleaned properties
+	 * @phan-return Cregion
+	 * @phpstan-return Cregion
 	 *
 	 * @url     GET dictionary/regions/byCode/{code}
 	 *
@@ -438,6 +451,8 @@ class Setup extends DolibarrApi
 	 * @param string    $filter     To filter the states by name
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array                List of states
+	 * @phan-return Cstate[]
+	 * @phpstan-return Cstate[]
 	 *
 	 * @url     GET dictionary/states
 	 *
@@ -504,6 +519,8 @@ class Setup extends DolibarrApi
 	 *
 	 * @param 	int       $id        	ID of state
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Cstate
+	 * @phpstan-return Cstate
 	 *
 	 * @url     GET dictionary/states/{id}
 	 *
@@ -520,6 +537,8 @@ class Setup extends DolibarrApi
 	 *
 	 * @param 	string    $code      	Code of state
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Cstate
+	 * @phpstan-return Cstate
 	 *
 	 * @url     GET dictionary/states/byCode/{code}
 	 *
@@ -547,6 +566,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the countries must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array                List of countries
+	 * @phan-return Ccountry[]
+	 * @phpstan-return Ccountry[]
 	 *
 	 * @url     GET dictionary/countries
 	 *
@@ -612,6 +633,8 @@ class Setup extends DolibarrApi
 	 * @param 	int       $id        	ID of country
 	 * @param 	string    $lang      	Code of the language the name of the country must be translated to
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Ccountry
+	 * @phpstan-return Ccountry
 	 *
 	 * @url     GET dictionary/countries/{id}
 	 *
@@ -629,6 +652,8 @@ class Setup extends DolibarrApi
 	 * @param 	string    $code      	Code of country (2 characters)
 	 * @param 	string    $lang      	Code of the language the name of the country must be translated to
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Ccountry
+	 * @phpstan-return Ccountry
 	 *
 	 * @url     GET dictionary/countries/byCode/{code}
 	 *
@@ -663,6 +688,8 @@ class Setup extends DolibarrApi
 	 * @param 	int       $id       ID of region
 	 * @param 	string    $code     Code of region
 	 * @return 	Object 				Object with cleaned properties
+	 * @phan-return Cregion
+	 * @phpstan-return Cregion
 	 *
 	 * @throws RestException
 	 */
@@ -670,7 +697,7 @@ class Setup extends DolibarrApi
 	{
 		$region = new Cregion($this->db);
 
-		$result = $region->fetch($id, $code);
+		$result = $region->fetch($id, (int) $code);
 		if ($result < 0) {
 			throw new RestException(503, 'Error when retrieving region : '.$region->error);
 		} elseif ($result == 0) {
@@ -686,6 +713,8 @@ class Setup extends DolibarrApi
 	 * @param 	int       $id        	ID of state
 	 * @param 	string    $code      	Code of state
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Cstate
+	 * @phpstan-return Cstate
 	 *
 	 * @throws RestException
 	 */
@@ -711,6 +740,8 @@ class Setup extends DolibarrApi
 	 * @param 	string    $iso       	ISO of country (3 characters)
 	 * @param 	string    $lang      	Code of the language the name of the country must be translated to
 	 * @return 	Object 					Object with cleaned properties
+	 * @phan-return Ccountry
+	 * @phpstan-return Ccountry
 	 *
 	 * @throws RestException
 	 */
@@ -744,6 +775,8 @@ class Setup extends DolibarrApi
 	 * @url     GET dictionary/availability
 	 *
 	 * @return array [List of availability]
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @throws	RestException	400		Bad value for sqlfilters
 	 * @throws	RestException	403		Access denied
@@ -820,7 +853,7 @@ class Setup extends DolibarrApi
 	 * @param object   $object    Object with label to translate
 	 * @param string   $lang      Code of the language the name of the object must be translated to
 	 * @param string   $prefix 	  Prefix for translation key
-	 * @param array    $dict      Array of dictionary for translation
+	 * @param string[] $dict      Array of dictionary for translation
 	 * @return void
 	 */
 	private function translateLabel($object, $lang, $prefix = 'Country', $dict = array('dict'))
@@ -856,6 +889,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Event's type is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of events types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/event_types
 	 *
@@ -923,6 +958,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Event's type is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of expense report types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/expensereport_types
 	 *
@@ -989,6 +1026,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the civility must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array	  List of Contacts types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/contact_types
 	 *
@@ -1058,6 +1097,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the civility must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array		List of civility types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/civilities
 	 *
@@ -1123,6 +1164,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Payment term is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of currencies
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/currencies
 	 *
@@ -1193,6 +1236,8 @@ class Setup extends DolibarrApi
 	 * @param string    $elementtype       Type of element ('adherent', 'commande', 'thirdparty', 'facture', 'propal', 'product', ...)
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.label:like:'SO-%')"
 	 * @return array				List of extra fields
+	 * @phan-return array<string,array<string,array{id:string,type:string,label:string,size:string,elementtype:string,default:string,computed:string,unique:string,required:string,param:string,pos:string,alwayseditable:string,perms:string,list:string,printable:string,totalizable:string,langs:string,help:string,css:string,cssview:string,csslist:string,fk_user_author:string,fk_user_modif:string,datec:string,tms:string}>>
+	 * @phpstan-return array<string,array<string,array{id:string,type:string,label:string,size:string,elementtype:string,default:string,computed:string,unique:string,required:string,param:string,pos:string,alwayseditable:string,perms:string,list:string,printable:string,totalizable:string,langs:string,help:string,css:string,cssview:string,csslist:string,fk_user_author:string,fk_user_modif:string,datec:string,tms:string}>>
 	 *
 	 * @url     GET extrafields
 	 *
@@ -1279,9 +1324,10 @@ class Setup extends DolibarrApi
 	 * @param   string     $attrname         extrafield attrname
 	 * @param   string     $elementtype      extrafield elementtype
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url     DELETE extrafields/{elementtype}/{attrname}
-	 *
 	 */
 	public function deleteExtrafieldsFromNames($attrname, $elementtype)
 	{
@@ -1315,11 +1361,12 @@ class Setup extends DolibarrApi
 	 * @param	string	$attrname		extrafield attrname
 	 * @param	string	$elementtype	extrafield elementtype
 	 * @return	array					List of extra fields
+	 * @phan-return array<string,array<string,array{id:string,type:string,label:string,size:string,elementtype:string,default:string,computed:string,unique:string,required:string,param:string,pos:string,alwayseditable:string,perms:string,list:string,printable:string,totalizable:string,langs:string,help:string,css:string,cssview:string,csslist:string,fk_user_author:string,fk_user_modif:string,datec:string,tms:string}>>
+	 * @phpstan-return array<string,array<string,array{id:string,type:string,label:string,size:string,elementtype:string,default:string,computed:string,unique:string,required:string,param:string,pos:string,alwayseditable:string,perms:string,list:string,printable:string,totalizable:string,langs:string,help:string,css:string,cssview:string,csslist:string,fk_user_author:string,fk_user_modif:string,datec:string,tms:string}>>
 	 *
 	 * @url     GET		extrafields/{elementtype}/{attrname}
 	 *
 	 * @suppress PhanPluginUnknownArrayMethodParamType  Luracast limitation
-	 *
 	 */
 	public function getExtrafields($attrname, $elementtype)
 	{
@@ -1390,13 +1437,14 @@ class Setup extends DolibarrApi
 	 *
 	 * @param	string	$attrname		extrafield attrname
 	 * @param	string	$elementtype	extrafield elementtype
-	 * @param	array	$request_data	Request datas
+	 * @param	array	$request_data	Request data
+	 * @phan-param ?array<string,string> $request_data
+	 * @phpstan-param ?array<string,string> $request_data
 	 * @return	int						ID of extrafield
 	 *
 	 * @url     POST	extrafields/{elementtype}/{attrname}
 	 *
 	 * @suppress PhanPluginUnknownArrayMethodParamType  Luracast limitation
-	 *
 	 */
 	public function postExtrafields($attrname, $elementtype, $request_data = null)
 	{
@@ -1449,7 +1497,7 @@ class Setup extends DolibarrApi
 		$pos = $request_data['pos'];
 		$moreparams = array();
 
-		if (0 > $extrafields->addExtraField($attrname, $label, $type, $pos, $size, $elementtype, $unique, $required, $default_value, $param, $alwayseditable, $perms, $list, $help, $computed, $entity, $langfile, $enabled, $totalizable, $printable, $moreparams)) {
+		if (0 > $extrafields->addExtraField($attrname, $label, $type, (int) $pos, $size, $elementtype, (int) $unique, (int) $required, $default_value, $param, (int) $alwayseditable, $perms, $list, $help, $computed, (string) $entity, $langfile, (string) $enabled, (int) $totalizable, (int) $printable, $moreparams)) {
 			throw new RestException(500, 'Error creating extrafield', array_merge(array($extrafields->errno), $extrafields->errors));
 		}
 
@@ -1474,18 +1522,18 @@ class Setup extends DolibarrApi
 	}
 
 	/**
-
 	 * Update Extrafield object
 	 *
 	 * @param	string	$attrname		extrafield attrname
 	 * @param	string	$elementtype	extrafield elementtype
-	 * @param	array	$request_data	Request datas
+	 * @param	array	$request_data	Request data
+	 * @phan-param ?array<string,string> $request_data
+	 * @phpstan-param ?array<string,string> $request_data
 	 * @return	int						ID of extrafield
 	 *
 	 * @url     PUT		extrafields/{elementtype}/{attrname}
 	 *
 	 * @suppress PhanPluginUnknownArrayMethodParamType  Luracast limitation
-	 *
 	 */
 	public function updateExtrafields($attrname, $elementtype, $request_data = null)
 	{
@@ -1535,7 +1583,7 @@ class Setup extends DolibarrApi
 		$moreparams = array();
 
 		dol_syslog(get_class($this).'::updateExtraField', LOG_DEBUG);
-		if (0 > $extrafields->updateExtraField($attrname, $label, $type, $pos, $size, $elementtype, $unique, $required, $default_value, $param, $alwayseditable, $perms, $list, $help, $computed, $entity, $langfile, $enabled, $totalizable, $printable, $moreparams)) {
+		if (0 > $extrafields->updateExtraField($attrname, $label, $type, (int) $pos, $size, $elementtype, (int) $unique, (int) $required, $default_value, $param, (int) $alwayseditable, $perms, $list, $help, $computed, (string) $entity, $langfile, (string) $enabled, (int) $totalizable, (int) $printable, $moreparams)) {
 			throw new RestException(500, 'Error updating extrafield', array_merge(array($extrafields->errno), $extrafields->errors));
 		}
 
@@ -1571,6 +1619,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Town is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of towns
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/towns
 	 *
@@ -1639,6 +1689,8 @@ class Setup extends DolibarrApi
 	 * @url     GET dictionary/payment_terms
 	 *
 	 * @return array List of payment terms
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @throws	RestException	400		Bad value for sqlfilters
 	 * @throws	RestException	403		Access denied
@@ -1704,6 +1756,8 @@ class Setup extends DolibarrApi
 	 * @url     GET dictionary/shipping_methods
 	 *
 	 * @return array List of shipping methods
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @throws	RestException	400		Bad value for sqlfilters
 	 * @throws	RestException	503		Error when retrieving list of shipping modes
@@ -1764,6 +1818,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Measuring unit is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of measuring unit
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/units
 	 *
@@ -1824,6 +1880,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Lega form is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of legal form
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/legal_form
 	 *
@@ -1886,6 +1944,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Staff is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of staff
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/staff
 	 *
@@ -1945,6 +2005,8 @@ class Setup extends DolibarrApi
 	 * @param int       $active     Social network is active or not {@min 0} {@max 1}
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of social networks
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/socialnetworks
 	 *
@@ -2012,6 +2074,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the category must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of ticket categories
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/ticket_categories
 	 *
@@ -2075,6 +2139,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the severity must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of ticket severities
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/ticket_severities
 	 *
@@ -2138,6 +2204,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the type must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of ticket types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/ticket_types
 	 *
@@ -2202,6 +2270,8 @@ class Setup extends DolibarrApi
 	 * @param string    $lang       Code of the language the label of the type must be translated to
 	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.code:like:'A%') and (t.active:>=:0)"
 	 * @return array				List of incoterm types
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET dictionary/incoterms
 	 *
@@ -2258,7 +2328,9 @@ class Setup extends DolibarrApi
 	 *
 	 * @url	GET /company
 	 *
-	 * @return  array|mixed Mysoc object
+	 * @return  array Mysoc object
+	 * @phan-return Societe		My Company properties
+	 * @phpstan-return Societe
 	 *
 	 * @throws RestException 403 Forbidden
 	 */
@@ -2312,6 +2384,8 @@ class Setup extends DolibarrApi
 	 * Get the list of establishments.
 	 *
 	 * @return array				List of establishments
+	 * @phan-return array<Object|false>
+	 * @phpstan-return array<Object|false>
 	 *
 	 * @url     GET /establishments
 	 *
@@ -2407,6 +2481,8 @@ class Setup extends DolibarrApi
 	 *
 	 * @param string	$target			Can be 'local' or 'default' or Url of the signatures file to use for the test. Must be reachable by the tested Dolibarr.
 	 * @return array					Result of file and setup integrity check
+	 * @phan-return array{resultcode:string,resultcomment:string,expectedchecksum:string,currentchecksum:string,out:string}
+	 * @phpstan-return array{resultcode:string,resultcomment:string,expectedchecksum:string,currentchecksum:string,out:string}
 	 *
 	 * @url     GET checkintegrity
 	 *
@@ -2729,7 +2805,9 @@ class Setup extends DolibarrApi
 	 *
 	 * @url	GET /modules
 	 *
-	 * @return  array|mixed Data without useless information
+	 * @return  array Data without useless information
+	 * @phan-return array<string,string>
+	 * @phpstan-return array<string,string>
 	 *
 	 * @throws RestException 403 Forbidden
 	 */
diff --git a/htdocs/api/class/api_status.class.php b/htdocs/api/class/api_status.class.php
index f6cf09e289f..d03d7a85f3f 100644
--- a/htdocs/api/class/api_status.class.php
+++ b/htdocs/api/class/api_status.class.php
@@ -2,6 +2,7 @@
 /*
  * Copyright (C) 2015      Jean-François Ferry     <jfefe@aternatik.fr>
  * Copyright (C) 2023      Christian Foellmann     <christian@foellmann.de>
+ * Copyright (C) 2025		MDW						<mdeweerd@users.noreply.github.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -42,6 +43,8 @@ class Status extends DolibarrApi
 	 * Get status (Dolibarr version)
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,dolibarr_version:string,access_locked:string,environment?:string,timestamp_now_utc?:int,timestamp_php_tz?:string,date_tz?:string}}
+	 * @phpstan-return array{success:array{code:int,dolibarr_version:string,access_locked:string,environment?:string,timestamp_now_utc?:int,timestamp_php_tz?:string,date_tz?:string}}
 	 */
 	public function index()
 	{
diff --git a/htdocs/bom/class/api_boms.class.php b/htdocs/bom/class/api_boms.class.php
index 6510e9063bc..6b5e61f24cc 100644
--- a/htdocs/bom/class/api_boms.class.php
+++ b/htdocs/bom/class/api_boms.class.php
@@ -61,6 +61,8 @@ class Boms extends DolibarrApi
 	 *
 	 * @param	int		$id				ID of bom
 	 * @return  Object					Object with cleaned properties
+	 * @phan-return BOM
+	 * @phpstan-return BOM
 	 *
 	 * @url	GET {id}
 	 *
@@ -98,6 +100,8 @@ class Boms extends DolibarrApi
 	 * @param string           $sqlfilters          Other criteria to filter answers separated by a comma. Syntax example "(t.ref:like:'SO-%') and (t.date_creation:<:'20160101')"
 	 * @param string		   $properties			Restrict the data returned to these properties. Ignored if empty. Comma separated list of properties names
 	 * @return  array                               Array of order objects
+	 * @phan-return BOM[]
+	 * @phpstan-return BOM[]
 	 *
 	 * @throws	RestException	400		Bad sqlfilters
 	 * @throws	RestException	403		Access denied
@@ -222,6 +226,8 @@ class Boms extends DolibarrApi
 	 * @phan-param ?array<string,string> $request_data
 	 * @phpstan-param ?array<string,string> $request_data
 	 * @return 	Object						Object after update
+	 * @phan-return BOM
+	 * @phpstan-return BOM
 	 *
 	 * @throws	RestException	403		Access denied
 	 * @throws	RestException	404		BOM not found
@@ -275,6 +281,8 @@ class Boms extends DolibarrApi
 	 *
 	 * @param   int     $id   BOM ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws	RestException	403		Access denied
 	 * @throws	RestException	404		BOM not found
@@ -314,6 +322,8 @@ class Boms extends DolibarrApi
 	 * @url	GET {id}/lines
 	 *
 	 * @return array
+	 * @phan-return BOMLine[]
+	 * @phpstan-return BOMLine[]
 	 *
 	 * @throws	RestException	403		Access denied
 	 * @throws	RestException	404		BOM not found
@@ -458,6 +468,8 @@ class Boms extends DolibarrApi
 	 * @url	DELETE {id}/lines/{lineid}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws	RestException	403		Access denied
 	 * @throws	RestException	404		BOM not found
@@ -576,13 +588,16 @@ class Boms extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param	array		$data   Array of data to validate
-	 * @return	array
+	 * @param	?array<string,string>		$data   Array of data to validate
+	 * @return	array<string,string>
 	 *
 	 * @throws	RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$myobject = array();
 		foreach ($this->bom->fields as $field => $propfield) {
 			if (in_array($field, array('rowid', 'entity', 'date_creation', 'tms', 'fk_user_creat')) || $propfield['notnull'] != 1) {
diff --git a/htdocs/categories/class/api_categories.class.php b/htdocs/categories/class/api_categories.class.php
index 6141084e699..96af20da374 100644
--- a/htdocs/categories/class/api_categories.class.php
+++ b/htdocs/categories/class/api_categories.class.php
@@ -265,6 +265,8 @@ class Categories extends DolibarrApi
 	 *
 	 * @param int $id   Category ID
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -731,13 +733,16 @@ class Categories extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array|null    $data   Data to validate
-	 * @return array				Return array with validated mandatory fields and their value
+	 * @param ?array<string,string>    $data	Data to validate
+	 * @return array<string,string>				Return array with validated mandatory fields and their value
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$category = array();
 		foreach (Categories::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/comm/action/class/api_agendaevents.class.php b/htdocs/comm/action/class/api_agendaevents.class.php
index 001bd6776cc..3f9b20893e8 100644
--- a/htdocs/comm/action/class/api_agendaevents.class.php
+++ b/htdocs/comm/action/class/api_agendaevents.class.php
@@ -313,6 +313,8 @@ class AgendaEvents extends DolibarrApi
 	 * @param   int     $id         Agenda Event ID
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -354,12 +356,15 @@ class AgendaEvents extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$event = array();
 		foreach (AgendaEvents::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/comm/propal/class/api_proposals.class.php b/htdocs/comm/propal/class/api_proposals.class.php
index b24c12be8ca..54a017d39b7 100644
--- a/htdocs/comm/propal/class/api_proposals.class.php
+++ b/htdocs/comm/propal/class/api_proposals.class.php
@@ -777,6 +777,8 @@ class Proposals extends DolibarrApi
 	 *
 	 * @param   int     $id         Commercial proposal ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -997,13 +999,16 @@ class Proposals extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 *
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$propal = array();
 		foreach (Proposals::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/commande/class/api_orders.class.php b/htdocs/commande/class/api_orders.class.php
index 41cd7865981..5ebaec4be86 100644
--- a/htdocs/commande/class/api_orders.class.php
+++ b/htdocs/commande/class/api_orders.class.php
@@ -571,6 +571,8 @@ class Orders extends DolibarrApi
 	 * @param int    $contactid      Id of contact to add
 	 * @param string $type           Type of the contact (BILLING, SHIPPING, CUSTOMER)
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url	POST {id}/contact/{contactid}/{type}
 	 *
@@ -620,6 +622,8 @@ class Orders extends DolibarrApi
 	 * @url	DELETE {id}/contact/{contactid}/{type}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 401
 	 * @throws RestException 404
@@ -721,6 +725,8 @@ class Orders extends DolibarrApi
 	 *
 	 * @param   int     $id         Order ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -1145,12 +1151,15 @@ class Orders extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$commande = array();
 		foreach (Orders::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/compta/bank/class/api_bankaccounts.class.php b/htdocs/compta/bank/class/api_bankaccounts.class.php
index 45c7a0c1973..e86deabfe43 100644
--- a/htdocs/compta/bank/class/api_bankaccounts.class.php
+++ b/htdocs/compta/bank/class/api_bankaccounts.class.php
@@ -196,6 +196,8 @@ class BankAccounts extends DolibarrApi
 	 * @url POST    /transfer
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string,bank_id_from:int,bank_id_to:int}}
+	 * @phpstan-return array{success:array{code:int,message:string,bank_id_from:int,bank_id_to:int}}
 	 *
 	 * @status 201
 	 *
@@ -373,6 +375,8 @@ class BankAccounts extends DolibarrApi
 	 *
 	 * @param int    $id    ID of account
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -400,13 +404,16 @@ class BankAccounts extends DolibarrApi
 	/**
 	 * Validate fields before creating an object
 	 *
-	 * @param array|null    $data    Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$account = array();
 		foreach (BankAccounts::$FIELDS as $field) {
 			if (!isset($data[$field])) {
@@ -668,6 +675,8 @@ class BankAccounts extends DolibarrApi
 	 * @param int    $id    		ID of account
 	 * @param int    $line_id       ID of account line
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url DELETE {id}/lines/{line_id}
 	 */
diff --git a/htdocs/compta/facture/class/api_invoices.class.php b/htdocs/compta/facture/class/api_invoices.class.php
index d805d98eaae..bb7430d0000 100644
--- a/htdocs/compta/facture/class/api_invoices.class.php
+++ b/htdocs/compta/facture/class/api_invoices.class.php
@@ -330,7 +330,7 @@ class Invoices extends DolibarrApi
 			throw new RestException(403, "Insuffisant rights");
 		}
 		// Check mandatory fields
-		$result = $this->_validate($request_data);
+		$request_data = $this->_validate($request_data);
 
 		foreach ($request_data as $field => $value) {
 			if ($field === 'caller') {
@@ -552,6 +552,8 @@ class Invoices extends DolibarrApi
 	 * @param	int    $contactid      Id of contact to add
 	 * @param	string $type           Type of the contact (BILLING, SHIPPING, CUSTOMER)
 	 * @return	array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url	POST {id}/contact/{contactid}/{type}
 	 *
@@ -744,6 +746,8 @@ class Invoices extends DolibarrApi
 	 *
 	 * @param	int		$id		Invoice ID
 	 * @return	array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -1602,6 +1606,8 @@ class Invoices extends DolibarrApi
 	 * Example of value for parameter arrayofamounts: {"1": {"amount": "99.99", "multicurrency_amount": ""}, "2": {"amount": "", "multicurrency_amount": "10"}}
 	 *
 	 * @param array   $arrayofamounts     {@from body}  Array with id of invoices with amount to pay for each invoice
+	 * @phan-param array<string,array{amount:string,multicurrency_amount:string}> $arrayofamounts
+	 * @phpstan-param array<string,array{amount:string,multicurrency_amount:string}> $arrayofamounts
 	 * @param string  $datepaye           {@from body}  Payment date
 	 * @param int     $paymentid           {@from body}  Payment mode Id {@min 1}
 	 * @param string  $closepaidinvoices   {@from body}  Close paid invoices {@choice yes,no}
@@ -1755,6 +1761,8 @@ class Invoices extends DolibarrApi
 	 * @url     PUT payments/{id}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 400 Bad parameters
 	 * @throws RestException 401 Not allowed
@@ -1819,13 +1827,16 @@ class Invoices extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param	array|null    $data       Datas to validate
-	 * @return	array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$invoice = array();
 		foreach (Invoices::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/contrat/class/api_contracts.class.php b/htdocs/contrat/class/api_contracts.class.php
index e6b638784d2..55771f352bf 100644
--- a/htdocs/contrat/class/api_contracts.class.php
+++ b/htdocs/contrat/class/api_contracts.class.php
@@ -558,6 +558,8 @@ class Contracts extends DolibarrApi
 	 * @param   int     $id         Contract ID
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -594,6 +596,9 @@ class Contracts extends DolibarrApi
 	 * @url POST    {id}/validate
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 * Workaround: send this in the body
@@ -640,6 +645,9 @@ class Contracts extends DolibarrApi
 	 * @url POST    {id}/close
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 * Workaround: send this in the body
@@ -700,12 +708,15 @@ class Contracts extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$contrat = array();
 		foreach (Contracts::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index 2a78aded5ac..998eeec9fc5 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -584,7 +584,7 @@ class Conf extends stdClass
 
 								$modulename = strtolower($reg[1]);
 								$partname = strtolower($reg[2]);
-								if (!isset($this->modules_parts[$partname]) || !is_array($this->modules_parts[$partname])) {
+								if (!array_key_exists($partname, $this->modules_parts) || !is_array($this->modules_parts[$partname])) {
 									$this->modules_parts[$partname] = array();
 								}
 
diff --git a/htdocs/core/lib/files.lib.php b/htdocs/core/lib/files.lib.php
index 529dc1c8d6e..cb2fd403a9d 100644
--- a/htdocs/core/lib/files.lib.php
+++ b/htdocs/core/lib/files.lib.php
@@ -3712,7 +3712,7 @@ function dirbasename($pathfile)
  * Function to get list of updated or modified files.
  * $file_list is used as global variable
  *
- * @param array{insignature:string[],missing?:array<array{filename:string,expectedmd5:string,expectedsize:string}>,updated:array<array{filename:string,expectedmd5:string,expectedsize:string,md5:string}>}	$file_list	Array for response
+ * @param array{}|array{insignature:string[],missing?:array<array{filename:string,expectedmd5:string,expectedsize:string}>,updated:array<array{filename:string,expectedmd5:string,expectedsize:string,md5:string}>}	$file_list	Array for response
  * @param   SimpleXMLElement	$dir    	        SimpleXMLElement of files to test
  * @param   string				$path   	        Path of files relative to $pathref. We start with ''. Used by recursive calls.
  * @param   string				$pathref            Path ref (DOL_DOCUMENT_ROOT)
diff --git a/htdocs/don/class/api_donations.class.php b/htdocs/don/class/api_donations.class.php
index 161f850b5e3..4570fda0bf5 100644
--- a/htdocs/don/class/api_donations.class.php
+++ b/htdocs/don/class/api_donations.class.php
@@ -283,6 +283,8 @@ class Donations extends DolibarrApi
 	 *
 	 * @param   int     $id         Order ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -395,12 +397,15 @@ class Donations extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$don = array();
 		foreach (Donations::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/expedition/class/api_shipments.class.php b/htdocs/expedition/class/api_shipments.class.php
index 98bcacfdd1d..b77123f1959 100644
--- a/htdocs/expedition/class/api_shipments.class.php
+++ b/htdocs/expedition/class/api_shipments.class.php
@@ -98,6 +98,8 @@ class Shipments extends DolibarrApi
 	 * @param string		   $properties			Restrict the data returned to these properties. Ignored if empty. Comma separated list of properties names
 	 * @param bool             $pagination_data     If this parameter is set to true the response will include pagination data. Default value is false. Page starts from 0*
 	 * @return  array                               Array of shipment objects
+	 * @phan-return Expedition[]
+	 * @phpstan-return Expedition[]
 	 *
 	 * @throws RestException
 	 */
@@ -198,8 +200,8 @@ class Shipments extends DolibarrApi
 	 * Create shipment object
 	 *
 	 * @param   array   $request_data   Request data
-	 * @phan-param ?array<string,string> $request_data
-	 * @phpstan-param ?array<string,string> $request_data
+	 * @phan-param ?array<string,string|array<string,string|array<string,string>>> $request_data
+	 * @phpstan-param ?array<string,string|array<string,string|array<string,string>>> $request_data
 	 * @return  int     				ID of shipment created
 	 */
 	public function post($request_data = null)
@@ -224,14 +226,14 @@ class Shipments extends DolibarrApi
 			foreach ($request_data["lines"] as $line) {
 				$shipmentline = new ExpeditionLigne($this->db);
 
-				$shipmentline->entrepot_id = $line['entrepot_id'];
-				$shipmentline->fk_element = $line['fk_element'] ?? $line['origin_id'];				// example: order id.  this->origin is 'commande'
-				$shipmentline->origin_line_id = $line['fk_elementdet'] ?? $line['origin_line_id'];	// example: order id
-				$shipmentline->fk_elementdet = $line['fk_elementdet'] ?? $line['origin_line_id'];	// example: order line id
+				$shipmentline->entrepot_id = (int) $line['entrepot_id'];
+				$shipmentline->fk_element = (int) ($line['fk_element'] ?? $line['origin_id']);				// example: order id.  this->origin is 'commande'
+				$shipmentline->origin_line_id = (int) ($line['fk_elementdet'] ?? $line['origin_line_id']);	// example: order id
+				$shipmentline->fk_elementdet = (int) ($line['fk_elementdet'] ?? $line['origin_line_id']);	// example: order line id
 				$shipmentline->origin_type = $line['element_type'] ?? $line['origin_type'];			// example 'commande' or 'order'
 				$shipmentline->element_type = $line['element_type'] ?? $line['origin_type'];		// example 'commande' or 'order'
-				$shipmentline->qty = $line['qty'];
-				$shipmentline->rang = $line['rang'];
+				$shipmentline->qty = (float) $line['qty'];
+				$shipmentline->rang = (string) $line['rang'];
 				$shipmentline->array_options = $line['array_options'];
 				$shipmentline->detail_batch = $line['detail_batch'];
 
@@ -424,6 +426,8 @@ class Shipments extends DolibarrApi
 	 * @url	DELETE {id}/lines/{lineid}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 401
 	 * @throws RestException 404
@@ -513,6 +517,8 @@ class Shipments extends DolibarrApi
 	 * @param   int     $id         Shipment ID
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -761,12 +767,15 @@ class Shipments extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$shipment = array();
 		foreach (Shipments::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/expensereport/class/api_expensereports.class.php b/htdocs/expensereport/class/api_expensereports.class.php
index 5a2841c0da7..228bea22d65 100644
--- a/htdocs/expensereport/class/api_expensereports.class.php
+++ b/htdocs/expensereport/class/api_expensereports.class.php
@@ -108,6 +108,8 @@ class ExpenseReports extends DolibarrApi
 	 * @param string    $properties			Restrict the data returned to these properties. Ignored if empty. Comma separated list of properties names
 	 * @param bool      $pagination_data    If this parameter is set to true the response will include pagination data. Default value is false. Page starts from 0*
 	 * @return  array                       Array of order objects
+	 * @phan-return ExpenseReport[]
+	 * @phpstan-return ExpenseReport[]
 	 */
 	public function index($sortfield = "t.rowid", $sortorder = 'ASC', $limit = 100, $page = 0, $user_ids = '', $sqlfilters = '', $properties = '', $pagination_data = false)
 	{
@@ -492,6 +494,8 @@ class ExpenseReports extends DolibarrApi
 	 * @param   int     $id         Expense Report ID
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -573,6 +577,8 @@ class ExpenseReports extends DolibarrApi
 	 * @param int       $limit      Limit for list
 	 * @param int       $page       Page number
 	 * @return array                List of paymentExpenseReport objects
+	 * @phan-return PaymentExpenseReport[]
+	 * @phpstan-return PaymentExpenseReport[]
 	 *
 	 * @url     GET /payments
 	 *
@@ -814,12 +820,15 @@ class ExpenseReports extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$expensereport = array();
 		foreach (ExpenseReports::$FIELDS as $field) {
 			if (!isset($data[$field])) {
@@ -833,12 +842,15 @@ class ExpenseReports extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validatepayment($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$expensereport = array();
 		foreach (ExpenseReports::$FIELDSPAYMENT as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/fourn/class/api_supplier_invoices.class.php b/htdocs/fourn/class/api_supplier_invoices.class.php
index 8ac35076f27..4dbb43115be 100644
--- a/htdocs/fourn/class/api_supplier_invoices.class.php
+++ b/htdocs/fourn/class/api_supplier_invoices.class.php
@@ -232,7 +232,7 @@ class SupplierInvoices extends DolibarrApi
 			throw new RestException(403, "Insuffisant rights");
 		}
 		// Check mandatory fields
-		$result = $this->_validate($request_data);
+		$request_data = $this->_validate($request_data);
 
 		foreach ($request_data as $field => $value) {
 			if ($field === 'caller') {
@@ -280,6 +280,10 @@ class SupplierInvoices extends DolibarrApi
 			throw new RestException(404, 'Supplier invoice not found');
 		}
 
+		if (!is_array($request_data)) {
+			$request_data = array();
+		}
+
 		foreach ($request_data as $field => $value) {
 			if ($field == 'id') {
 				continue;
@@ -312,6 +316,8 @@ class SupplierInvoices extends DolibarrApi
 	 * @param int   $id Supplier invoice ID
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 403
 	 * @throws RestException 404
@@ -352,6 +358,8 @@ class SupplierInvoices extends DolibarrApi
 	 * @url POST    {id}/validate
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 304
 	 * @throws RestException 403
@@ -715,6 +723,8 @@ class SupplierInvoices extends DolibarrApi
 	 * @url     DELETE {id}/lines/{lineid}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 400 Bad parameters
 	 * @throws RestException 403 Not allowed
@@ -778,13 +788,16 @@ class SupplierInvoices extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array $data   Datas to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$invoice = array();
 		foreach (SupplierInvoices::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/fourn/class/api_supplier_orders.class.php b/htdocs/fourn/class/api_supplier_orders.class.php
index 1c805b156f2..06bf957bf1f 100644
--- a/htdocs/fourn/class/api_supplier_orders.class.php
+++ b/htdocs/fourn/class/api_supplier_orders.class.php
@@ -97,6 +97,8 @@ class SupplierOrders extends DolibarrApi
 	 * @param string    $properties		  Restrict the data returned to these properties. Ignored if empty. Comma separated list of properties names
 	 * @param bool      $pagination_data  If this parameter is set to true the response will include pagination data. Default value is false. Page starts from 0*
 	 * @return array                      Array of order objects
+	 * @phan-return CommandeFournisseur[]|array{data:CommandeFournisseur[],pagination:array{total:int,page:int,page_count:int,limit:int}}
+	 * @phpstan-return CommandeFournisseur[]|array{data:CommandeFournisseur[],pagination:array{total:int,page:int,page_count:int,limit:int}}
 	 *
 	 * @throws RestException
 	 */
@@ -224,7 +226,7 @@ class SupplierOrders extends DolibarrApi
 			$obj_ret['pagination'] = [
 				'total' => (int) $total,
 				'page' => $page, //count starts from 0
-				'page_count' => ceil((int) $total / $limit),
+				'page_count' => (int) ceil((int) $total / $limit),
 				'limit' => $limit
 			];
 		}
@@ -248,7 +250,7 @@ class SupplierOrders extends DolibarrApi
 			throw new RestException(403, "Insuffisant rights");
 		}
 		// Check mandatory fields
-		$result = $this->_validate($request_data);
+		$request_data = $this->_validate($request_data);
 
 		foreach ($request_data as $field => $value) {
 			if ($field === 'caller') {
@@ -378,6 +380,8 @@ class SupplierOrders extends DolibarrApi
 	 * @param string	$type			Type of the contact (BILLING, SHIPPING, CUSTOMER, SALESREPFOLL, ...)
 	 * @param string	$source			Source of the contact (external, internal)
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url	POST {id}/contact/{contactid}/{type}/{source}
 	 *
@@ -428,6 +432,8 @@ class SupplierOrders extends DolibarrApi
 	 * @url	DELETE {id}/contact/{contactid}/{type}/{source}
 	 *
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException 401
 	 * @throws RestException 404
@@ -481,6 +487,8 @@ class SupplierOrders extends DolibarrApi
 	 *
 	 * @param int		$id		Supplier order ID
 	 * @return array			Array of result
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -519,6 +527,9 @@ class SupplierOrders extends DolibarrApi
 	 * @url POST    {id}/validate
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 * Workaround: send this in the body
@@ -567,6 +578,9 @@ class SupplierOrders extends DolibarrApi
 	 * @url POST    {id}/approve
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 * Workaround: send this in the body
@@ -617,6 +631,9 @@ class SupplierOrders extends DolibarrApi
 	 * @url POST    {id}/makeorder
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 * Workaround: send this in the body
@@ -681,10 +698,15 @@ class SupplierOrders extends DolibarrApi
 	 * @param   integer	$closeopenorder	Close order if everything is received {@required false}
 	 * @param   string	$comment	Comment {@required false}
 	 * @param   array	$lines		Array of product dispatches
+	 * @phan-param array<array{fk_product:string,qty:string,warehouse:string,price:string,comment:string,eatby:string,sellby:string,batch:string,id:string,notrigger:string}> $lines
+	 * @phpstan-param array<array{fk_product:string,qty:string,warehouse:string,price:string,comment:string,eatby:string,sellby:string,batch:string,id:string,notrigger:string}> $lines
 	 *
 	 * @url POST    {id}/receive
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
+	 *
 	 * FIXME An error 403 is returned if the request has an empty body.
 	 * Error message: "Forbidden: Content type `text/plain` is not supported."
 	 */
@@ -715,12 +737,12 @@ class SupplierOrders extends DolibarrApi
 				$lineObj->eatby,
 				$lineObj->sellby,
 				$lineObj->batch,
-				$lineObj->id,
+				(int) $lineObj->id,
 				$lineObj->notrigger
 			);
 
 			if ($result < 0) {
-				throw new RestException(500, 'Error dispatch order line '.$line->id.': '.$this->order->error);
+				throw new RestException(500, 'Error dispatch order line '.$lineObj->id.': '.$this->order->error);
 			}
 		}
 
@@ -765,13 +787,16 @@ class SupplierOrders extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array $data   Datas to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$order = array();
 		foreach (SupplierOrders::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/knowledgemanagement/class/api_knowledgemanagement.class.php b/htdocs/knowledgemanagement/class/api_knowledgemanagement.class.php
index 9ad0a3f0c1e..a46e075634b 100644
--- a/htdocs/knowledgemanagement/class/api_knowledgemanagement.class.php
+++ b/htdocs/knowledgemanagement/class/api_knowledgemanagement.class.php
@@ -340,6 +340,8 @@ class KnowledgeManagement extends DolibarrApi
 	 *
 	 * @param   int     $id   KnowledgeRecord ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException
 	 *
@@ -438,13 +440,16 @@ class KnowledgeManagement extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param	array		$data   Array of data to validate
-	 * @return	array
+	 * @param ?array<string,string> $data   Array of data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws	RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$knowledgerecord = array();
 		foreach ($this->knowledgerecord->fields as $field => $propfield) {
 			if (in_array($field, array('rowid', 'entity', 'date_creation', 'tms', 'fk_user_creat')) || $propfield['notnull'] != 1) {
diff --git a/htdocs/multicurrency/class/api_multicurrencies.class.php b/htdocs/multicurrency/class/api_multicurrencies.class.php
index 82617fd1830..c9437431d10 100644
--- a/htdocs/multicurrency/class/api_multicurrencies.class.php
+++ b/htdocs/multicurrency/class/api_multicurrencies.class.php
@@ -291,6 +291,8 @@ class MultiCurrencies extends DolibarrApi
 	 *
 	 * @param   int     $id	Currency ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException
 	 */
diff --git a/htdocs/partnership/class/api_partnerships.class.php b/htdocs/partnership/class/api_partnerships.class.php
index f00b71d37a3..6be059f25f9 100644
--- a/htdocs/partnership/class/api_partnerships.class.php
+++ b/htdocs/partnership/class/api_partnerships.class.php
@@ -278,6 +278,8 @@ class Partnerships extends DolibarrApi
 	 *
 	 * @param   int     $id   Partnership ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @throws RestException
 	 *
@@ -376,13 +378,16 @@ class Partnerships extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param	array		$data   Array of data to validate
-	 * @return	array
+	 * @param ?array<string,string> $data   Array of data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws	RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$partnership = array();
 		foreach ($this->partnership->fields as $field => $propfield) {
 			if (in_array($field, array('rowid', 'entity', 'date_creation', 'tms', 'fk_user_creat')) || $propfield['notnull'] != 1) {
diff --git a/htdocs/product/class/api_products.class.php b/htdocs/product/class/api_products.class.php
index fd425243af8..ce9d7803292 100644
--- a/htdocs/product/class/api_products.class.php
+++ b/htdocs/product/class/api_products.class.php
@@ -523,6 +523,8 @@ class Products extends DolibarrApi
 	 *
 	 * @param  int		$id			Product ID
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -830,6 +832,8 @@ class Products extends DolibarrApi
 	 * @param	int			$delivery_time_days				Delay in days for delivery (max). May be '' if not defined.
 	 * @param   string      $supplier_reputation            Reputation with this product to the defined supplier (empty, FAVORITE, DONOTORDER)
 	 * @param   array		$localtaxes_array				Array with localtaxes info array('0'=>type1,'1'=>rate1,'2'=>type2,'3'=>rate2) (loaded by getLocalTaxesFromRate(vatrate, 0, ...) function).
+	 * @phan-param		array{0:string,1:string,2:string,3:string}|array{}	$localtaxes_array
+	 * @phpstan-param	array{0:string,1:string,2:string,3:string}|array{}	$localtaxes_array
 	 * @param   string		$newdefaultvatcode              Default vat code
 	 * @param	float		$multicurrency_buyprice			Purchase price for the quantity min in currency
 	 * @param	string		$multicurrency_price_base_type	HT or TTC in currency
@@ -1805,6 +1809,8 @@ class Products extends DolibarrApi
 	 * @param  float $price_impact Price impact of variant
 	 * @param  bool $price_impact_is_percent Price impact in percent (true or false)
 	 * @param  array $features List of attributes pairs id_attribute->id_value. Example: array(id_color=>id_Blue, id_size=>id_small, id_option=>id_val_a, ...)
+	 * @phan-param array<string,string> $features
+	 * @phpstan-param array<string,string> $features
 	 * @param  string $reference Customized reference of variant
 	 * @param  string $ref_ext External reference of variant
 	 * @return int
@@ -1868,6 +1874,8 @@ class Products extends DolibarrApi
 	 * @param  float  $price_impact             Price impact of variant
 	 * @param  bool   $price_impact_is_percent  Price impact in percent (true or false)
 	 * @param  array  $features                 List of attributes pairs id_attribute->id_value. Example: array(id_color=>id_Blue, id_size=>id_small, id_option=>id_val_a, ...)
+	 * @phan-param array<string,string> $features
+	 * @phpstan-param array<string,string> $features
 	 * @return int
 	 *
 	 * @throws RestException 500	System error
@@ -2100,12 +2108,15 @@ class Products extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param  array $data Datas to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$product = array();
 		foreach (Products::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/product/stock/class/api_stockmovements.class.php b/htdocs/product/stock/class/api_stockmovements.class.php
index 39ae48d431d..2a51192218b 100644
--- a/htdocs/product/stock/class/api_stockmovements.class.php
+++ b/htdocs/product/stock/class/api_stockmovements.class.php
@@ -1,5 +1,6 @@
 <?php
 /* Copyright (C) 2016   Laurent Destailleur     <eldy@users.sourceforge.net>
+ * Copyright (C) 2025		MDW					<mdeweerd@users.noreply.github.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -29,7 +30,7 @@ require_once DOL_DOCUMENT_ROOT.'/product/stock/class/mouvementstock.class.php';
 class StockMovements extends DolibarrApi
 {
 	/**
-	 * @var array   $FIELDS     Mandatory fields, checked when create and update object
+	 * @var array       Mandatory fields, checked when create and update object
 	 */
 	public static $FIELDS = array(
 		'product_id',
@@ -38,7 +39,7 @@ class StockMovements extends DolibarrApi
 	);
 
 	/**
-	 * @var MouvementStock $stockmovement {@type MouvementStock}
+	 * @var MouvementStock {@type MouvementStock}
 	 */
 	public $stockmovement;
 
@@ -155,7 +156,7 @@ class StockMovements extends DolibarrApi
 	 * $price Can be set to update AWP (Average Weighted Price) when you make a stock increase
 	 * $dlc Eat-by date. Will be used if lot does not exists yet and will be created.
 	 * $dluo Sell-by date. Will be used if lot does not exists yet and will be created.
-		 *
+	 *
 	 * @param int $product_id Id product id {@min 1} {@from body} {@required true}
 	 * @param int $warehouse_id Id warehouse {@min 1} {@from body} {@required true}
 	 * @param float $qty Qty to add (Use negative value for a stock decrease) {@from body} {@required true}
@@ -337,13 +338,16 @@ class StockMovements extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array|null    $data    Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data) // @phpstan-ignore-line
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$stockmovement = array();
 		foreach (self::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/product/stock/class/api_warehouses.class.php b/htdocs/product/stock/class/api_warehouses.class.php
index 1a7cb9a550a..c4fd8472e5f 100644
--- a/htdocs/product/stock/class/api_warehouses.class.php
+++ b/htdocs/product/stock/class/api_warehouses.class.php
@@ -244,6 +244,8 @@ class Warehouses extends DolibarrApi
 	 *
 	 * @param int $id   Warehouse ID
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -294,13 +296,16 @@ class Warehouses extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array|null    $data    Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$warehouse = array();
 		foreach (Warehouses::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/projet/class/api_tasks.class.php b/htdocs/projet/class/api_tasks.class.php
index 08b0facb0ea..774cebd33d4 100644
--- a/htdocs/projet/class/api_tasks.class.php
+++ b/htdocs/projet/class/api_tasks.class.php
@@ -494,6 +494,8 @@ class Tasks extends DolibarrApi
 	 * @param   int     $id         Task ID
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -537,6 +539,8 @@ class Tasks extends DolibarrApi
 	 *      NOTE: Should be "POST {id}/timespent", since POST already implies "add"
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function addTimeSpent($id, $date, $duration, $user_id = 0, $note = '')
 	{
@@ -596,6 +600,8 @@ class Tasks extends DolibarrApi
 	 * @url PUT    {id}/timespent/{timespent_id}
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function putTimeSpent($id, $timespent_id, $date, $duration, $user_id = 0, $note = '')
 	{
@@ -641,6 +647,8 @@ class Tasks extends DolibarrApi
 	 * @url DELETE    {id}/timespent/{timespent_id}
 	 *
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function deleteTimeSpent($id, $timespent_id)
 	{
@@ -739,12 +747,15 @@ class Tasks extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$object = array();
 		foreach (self::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/salaries/class/api_salaries.class.php b/htdocs/salaries/class/api_salaries.class.php
index d55c3debb7d..a7227e4ebe6 100644
--- a/htdocs/salaries/class/api_salaries.class.php
+++ b/htdocs/salaries/class/api_salaries.class.php
@@ -424,13 +424,16 @@ class Salaries extends DolibarrApi
 	/**
 	 * Validate fields before creating an object
 	 *
-	 * @param array|null    $data    Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$salary = array();
 		foreach (Salaries::$FIELDS as $field) {
 			if (!isset($data[$field])) {
@@ -444,13 +447,16 @@ class Salaries extends DolibarrApi
 	/**
 	 * Validate fields before creating an object
 	 *
-	 * @param array|null    $data    Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validatepayments($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$paymentsalary = array();
 		$fields = Salaries::$FIELDSPAYMENT;
 		if (isModEnabled("bank")) {
diff --git a/htdocs/societe/class/api_thirdparties.class.php b/htdocs/societe/class/api_thirdparties.class.php
index f5972267cc1..bfecfc45047 100644
--- a/htdocs/societe/class/api_thirdparties.class.php
+++ b/htdocs/societe/class/api_thirdparties.class.php
@@ -408,6 +408,8 @@ class Thirdparties extends DolibarrApi
 	 *
 	 * @param int $id   Thirdparty ID
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -2141,13 +2143,16 @@ class Thirdparties extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array $data   Datas to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$thirdparty = array();
 		foreach (Thirdparties::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/supplier_proposal/class/api_supplier_proposals.class.php b/htdocs/supplier_proposal/class/api_supplier_proposals.class.php
index a7b91c68681..0d607880f12 100644
--- a/htdocs/supplier_proposal/class/api_supplier_proposals.class.php
+++ b/htdocs/supplier_proposal/class/api_supplier_proposals.class.php
@@ -57,6 +57,8 @@ class SupplierProposals extends DolibarrApi
 	 *
 	 * @param   int     $id         Supplier proposal ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -321,12 +323,15 @@ class SupplierProposals extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array           $data   Array with data to verify
-	 * @return  array
+	 * @param ?array<string,string> $data   Array with data to verify
+	 * @return array<string,string>
 	 * @throws  RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$propal = array();
 		foreach (SupplierProposals::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/ticket/class/api_tickets.class.php b/htdocs/ticket/class/api_tickets.class.php
index fafc67c469d..c633ab5085e 100644
--- a/htdocs/ticket/class/api_tickets.class.php
+++ b/htdocs/ticket/class/api_tickets.class.php
@@ -433,6 +433,8 @@ class Tickets extends DolibarrApi
 	 *
 	 * @param   int     $id   Ticket ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -463,13 +465,16 @@ class Tickets extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array $data   Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$ticket = array();
 		foreach (Tickets::$FIELDS as $field) {
 			if (!isset($data[$field])) {
@@ -483,13 +488,16 @@ class Tickets extends DolibarrApi
 	/**
 	 * Validate fields before create or update object message
 	 *
-	 * @param array $data   Data to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validateMessage($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$ticket = array();
 		foreach (Tickets::$FIELDS_MESSAGES as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/webhook/class/api_webhook.class.php b/htdocs/webhook/class/api_webhook.class.php
index 55d7ae209f9..e51a73ff463 100644
--- a/htdocs/webhook/class/api_webhook.class.php
+++ b/htdocs/webhook/class/api_webhook.class.php
@@ -168,7 +168,7 @@ class Webhook extends DolibarrApi
 			throw new RestException(403);
 		}
 		// Check mandatory fields
-		$this->_validate($request_data);
+		$request_data = $this->_validate($request_data);
 
 		foreach ($request_data as $field => $value) {
 			$this->target->$field = $this->_checkValForAPI($field, $value, $this->target);
@@ -228,6 +228,8 @@ class Webhook extends DolibarrApi
 	 *
 	 * @param int $id   Target ID
 	 * @return array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 */
 	public function delete($id)
 	{
@@ -288,13 +290,16 @@ class Webhook extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param array $data   Datas to validate
-	 * @return array
+	 * @param ?array<string,string> $data   Data to validate
+	 * @return array<string,string>
 	 *
 	 * @throws RestException
 	 */
 	private function _validate($data)
 	{
+		if ($data === null) {
+			$data = array();
+		}
 		$target = array();
 		foreach (self::$FIELDS as $field) {
 			if (!isset($data[$field])) {
diff --git a/htdocs/zapier/class/api_zapier.class.php b/htdocs/zapier/class/api_zapier.class.php
index 1416009cdc2..d917d192024 100644
--- a/htdocs/zapier/class/api_zapier.class.php
+++ b/htdocs/zapier/class/api_zapier.class.php
@@ -97,6 +97,8 @@ class Zapier extends DolibarrApi
 	 * Return an array with hook information
 	 *
 	 * @return  array     data
+	 * @phan-return array<string,string>
+	 * @phpstan-return array<string,string>
 	 *
 	 * @url GET /getmoduleschoices/
 	 * @throws  RestException
@@ -110,7 +112,7 @@ class Zapier extends DolibarrApi
 		$arraychoices = array(
 			'invoices' => 'Invoices',
 			'orders' => 'Orders',
-			'thirdparties' => 'Thirparties',
+			'thirdparties' => 'ThirdParties',
 			'contacts' => 'Contacts',
 			'users' => 'Users',
 		);
@@ -138,6 +140,8 @@ class Zapier extends DolibarrApi
 	 * @param string           $sqlfilters          Other criteria to filter answers separated by a comma. Syntax example "(t.ref:like:'SO-%') and (t.date_creation:<:'20160101')"
 	 * @param string		   $properties			Restrict the data returned to these properties. Ignored if empty. Comma separated list of properties names
 	 * @return  array                               Array of order objects
+	 * @phan-return Hook[]
+	 * @phpstan-return Hook[]
 	 *
 	 * @throws RestException
 	 *
@@ -224,6 +228,8 @@ class Zapier extends DolibarrApi
 	 * @phan-param ?array<string,string> $request_data
 	 * @phpstan-param ?array<string,string> $request_data
 	 * @return array  ID of hook
+	 * @phan-return array{id:int}
+	 * @phpstan-return array{id:int}
 	 *
 	 * @url	POST /hook/
 	 */
@@ -239,7 +245,7 @@ class Zapier extends DolibarrApi
 		$fields = array(
 			'url',
 		);
-		$result = $this->validate($request_data, $fields);
+		$request_data = $this->validate($request_data, $fields);
 
 		foreach ($request_data as $field => $value) {
 			if ($field === 'caller') {
@@ -266,6 +272,8 @@ class Zapier extends DolibarrApi
 	 *
 	 * @param   int     $id   Hook ID
 	 * @return  array
+	 * @phan-return array{success:array{code:int,message:string}}
+	 * @phpstan-return array{success:array{code:int,message:string}}
 	 *
 	 * @url DELETE /hook/{id}
 	 */
@@ -314,8 +322,8 @@ class Zapier extends DolibarrApi
 	/**
 	 * Validate fields before create or update object
 	 *
-	 * @param   array<string,mixed>	$data       Array of data to validate
-	 * @param   string[]			$fields     Array of fields needed
+	 * @param   ?array<string,mixed>	$data       Array of data to validate
+	 * @param   string[]				$fields     Array of fields needed
 	 * @return  array<string,mixed>
 	 *
 	 * @throws  RestException