diff --git a/build/phpstan/phpstan-baseline.neon b/build/phpstan/phpstan-baseline.neon
index 333dacb9540..d4c9f839849 100644
--- a/build/phpstan/phpstan-baseline.neon
+++ b/build/phpstan/phpstan-baseline.neon
@@ -27852,12 +27852,6 @@ parameters:
 			count: 1
 			path: ../../htdocs/product/stock/movement_list.php
 
-		-
-			message: '#^Variable \$whClass might not be defined\.$#'
-			identifier: variable.undefined
-			count: 1
-			path: ../../htdocs/product/stock/movement_list.php
-
 		-
 			message: '#^If condition is always false\.$#'
 			identifier: if.alwaysFalse
diff --git a/dev/setup/pre-commit/README.md b/dev/setup/pre-commit/README.md
index ab830e9270c..d4bbb8013f5 100644
--- a/dev/setup/pre-commit/README.md
+++ b/dev/setup/pre-commit/README.md
@@ -96,4 +96,6 @@ CI also runs pre-commit to help maintain code quality.
 
 Note:
 Code for precommits are saved into:
+.cache/pre-commit/repo*/pre_commit_hooks/php-*.sh
+and
 .cache/pre-commit/repo*/py_env-python3/lib/python*/site-packages/pre_commit_hooks/no_commit_to_branch.py
diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index 7ad5ee54ee7..eee7fde0377 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -43,7 +43,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/commonpeople.class.php';
 
 
 /**
- *		Class to manage members of a foundation
+ *		Class to manage members of a foundation.
  */
 class Adherent extends CommonObject
 {
@@ -829,7 +829,8 @@ class Adherent extends CommonObject
 		$sql .= ", fk_user_mod = ".($user->id > 0 ? $user->id : 'null'); // Can be null because member can be create by a guest
 		$sql .= " WHERE rowid = ".((int) $this->id);
 
-		// If we change the type of membership, we set also label of new type
+		// If we change the type of membership, we set also label of new type..
+		'@phan-var-force Adherent $oldcopy';
 		if (!empty($this->oldcopy) && $this->typeid != $this->oldcopy->typeid) {
 			$sql2 = "SELECT libelle as label";
 			$sql2 .= " FROM ".MAIN_DB_PREFIX."adherent_type";
@@ -3104,11 +3105,14 @@ class Adherent extends CommonObject
 						$nbko++;
 						$listofmembersko[$adherent->id] = $adherent->id;
 					} else {
-						$adherent->fetch_thirdparty();
-
-						// Language code to use ($languagecodeformember) is default language of thirdparty, if no thirdparty, the language found from country of member then country of thirdparty, and if still not found we use the language of company.
-						$languagefromcountrycode = getLanguageCodeFromCountryCode($adherent->country_code ? $adherent->country_code : $adherent->thirdparty->country_code);
-						$languagecodeformember = (empty($adherent->thirdparty->default_lang) ? ($languagefromcountrycode ? $languagefromcountrycode : $mysoc->default_lang) : $adherent->thirdparty->default_lang);
+						$thirdpartyres = $adherent->fetch_thirdparty();
+						if ($thirdpartyres === -1 ) {
+							$languagecodeformember = $mysoc->default_lang;
+						} else {
+							// Language code to use ($languagecodeformember) is default language of thirdparty, if no thirdparty, the language found from country of member then country of thirdparty, and if still not found we use the language of company.
+							$languagefromcountrycode = getLanguageCodeFromCountryCode($adherent->country_code ? $adherent->country_code : $adherent->thirdparty->country_code);
+							$languagecodeformember = (empty($adherent->thirdparty->default_lang) ? ($languagefromcountrycode ? $languagefromcountrycode : $mysoc->default_lang) : $adherent->thirdparty->default_lang);
+						}
 
 						// Send reminder email
 						$outputlangs = new Translate('', $conf);
diff --git a/htdocs/asset/class/asset.class.php b/htdocs/asset/class/asset.class.php
index ca2060ac4b2..6454ef43b84 100644
--- a/htdocs/asset/class/asset.class.php
+++ b/htdocs/asset/class/asset.class.php
@@ -231,12 +231,6 @@ class Asset extends CommonObject
 	 */
 	public $status;
 
-	/**
-	 * @var static object oldcopy
-	 */
-	public $oldcopy;
-
-
 	/**
 	 * @var AssetDepreciationOptions	Used for computed fields of depreciation options class.
 	 */
diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index ac6d62da82c..57e8bb3b0b9 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -122,11 +122,6 @@ class Propal extends CommonObject
 	 */
 	public $ref_customer;
 
-	/**
-	 * @var static oldcopy with propal properties
-	 */
-	public $oldcopy;
-
 	/**
 	 * Status of the quote
 	 * @var int
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index e63c86551cc..7f7eb71398b 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -248,11 +248,6 @@ class Facture extends CommonInvoice
 	 */
 	public $tab_next_situation_invoice = array();
 
-	/**
-	 * @var static object oldcopy
-	 */
-	public $oldcopy;
-
 	/**
 	 * @var float percentage of retainage
 	 */
diff --git a/htdocs/contact/class/contact.class.php b/htdocs/contact/class/contact.class.php
index 5fc553e9994..410ea609318 100644
--- a/htdocs/contact/class/contact.class.php
+++ b/htdocs/contact/class/contact.class.php
@@ -343,13 +343,6 @@ class Contact extends CommonObject
 	public $ip;
 	// END MODULEBUILDER PROPERTIES
 
-
-	/**
-	 * Old copy
-	 * @var static
-	 */
-	public $oldcopy; // To contain a clone of this when we need to save old properties of object
-
 	/**
 	 * @var array<int,array{id:int,socid:int,element:string,source:string,code:string,label:string}> roles
 	 */
diff --git a/htdocs/core/class/comment.class.php b/htdocs/core/class/comment.class.php
index c1e3f61379d..9bb732e0a42 100644
--- a/htdocs/core/class/comment.class.php
+++ b/htdocs/core/class/comment.class.php
@@ -76,11 +76,6 @@ class Comment extends CommonObject
 
 	public $comments = array();
 
-	/**
-	 * @var static 	Object oldcopy
-	 */
-	public $oldcopy;
-
 
 	/**
 	 *  Constructor
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 9176a70ede7..30f3d0739ee 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -177,7 +177,7 @@ abstract class CommonObject
 	private $linkedObjectsFullLoaded = array();
 
 	/**
-	 * @var static|null		To store a cloned copy of the object before editing it (to keep track of its former properties)
+	 * @var ?static		To store a cloned copy of the object before editing it (to keep track of its former properties)
 	 */
 	public $oldcopy;
 
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 4ab0c8a3a1a..edd1f7efd07 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2000-2007	Rodolphe Quiedeville		<rodolphe@quiedeville.org>
  * Copyright (C) 2003		Jean-Louis Bergamo			<jlb@j1b.org>
- * Copyright (C) 2004-2022	Laurent Destailleur			<eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2024	Laurent Destailleur			<eldy@users.sourceforge.net>
  * Copyright (C) 2004		Sebastien Di Cintio			<sdicintio@ressource-toi.org>
  * Copyright (C) 2004		Benoit Mortier				<benoit.mortier@opensides.be>
  * Copyright (C) 2004		Christophe Combelles		<ccomb@free.fr>
@@ -122,10 +122,10 @@ if (!function_exists('str_contains')) {
 
 
 /**
- * Return the full path of the directory where a module (or an object of a module) stores its files,
+ * Return the full path of the directory where a module (or an object of a module) stores its files.
  * Path may depends on the entity if a multicompany module is enabled.
  *
- * @param 	CommonObject 	$object 	Dolibarr common object
+ * @param 	CommonObject 	$object 	Dolibarr common object.
  * @param 	string 			$module 	Override object element, for example to use 'mycompany' instead of 'societe'
  * @param	int				$forobject	Return the more complete path for the given object instead of for the module only.
  * @param	string			$mode		'output' (full main dir) or 'outputrel' (relative dir) or 'temp' (for temporary files) or 'version' (dir for archived files)
@@ -1592,7 +1592,7 @@ function dol_clone($object, $native = 2)
 }
 
 /**
- *	Optimize a size for some browsers (phone, smarphone, ...)
+ *	Optimize a size for some browsers (phone, smarphone...)
  *
  * 	@param	int		$size		Size we want
  * 	@param	string	$type		Type of optimizing:
diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 0eff9ebfbd3..558a6e285b6 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -71,11 +71,6 @@ class Product extends CommonObject
 	 */
 	public $fk_element = 'fk_product';
 
-	/**
-	 * @var static
-	 */
-	public $oldcopy;
-
 	/**
 	 * @var array<string, array<string>>	List of child tables. To test if we can delete object.
 	 */
diff --git a/htdocs/product/stock/class/productlot.class.php b/htdocs/product/stock/class/productlot.class.php
index 61e7daeef71..86bd74c9503 100644
--- a/htdocs/product/stock/class/productlot.class.php
+++ b/htdocs/product/stock/class/productlot.class.php
@@ -848,7 +848,6 @@ class Productlot extends CommonObject
 	 */
 	public function loadStatsExpedition($socid = 0)
 	{
-		// phpcs:enable
 		global $user, $hookmanager, $action;
 
 		$sql = "SELECT COUNT(DISTINCT exp.fk_soc) as nb_customers, COUNT(DISTINCT exp.rowid) as nb,";
@@ -923,7 +922,6 @@ class Productlot extends CommonObject
 	 */
 	public function loadStatsSupplierOrder($socid = 0)
 	{
-		// phpcs:enable
 		global $user, $hookmanager, $action;
 
 		$sql = "SELECT COUNT(DISTINCT cf.fk_soc) as nb_customers, COUNT(DISTINCT cf.rowid) as nb,";
@@ -998,7 +996,6 @@ class Productlot extends CommonObject
 	 */
 	public function loadStatsReception($socid = 0)
 	{
-		// phpcs:enable
 		global $user, $hookmanager, $action;
 
 		$sql = "SELECT COUNT(DISTINCT recep.fk_soc) as nb_customers, COUNT(DISTINCT recep.rowid) as nb,";
@@ -1072,7 +1069,6 @@ class Productlot extends CommonObject
 	 */
 	public function loadStatsMo($socid = 0)
 	{
-		// phpcs:enable
 		global $user, $hookmanager, $action;
 
 		$error = 0;
diff --git a/htdocs/product/stock/movement_list.php b/htdocs/product/stock/movement_list.php
index 86986da7ed4..e5cabbe26d5 100644
--- a/htdocs/product/stock/movement_list.php
+++ b/htdocs/product/stock/movement_list.php
@@ -333,8 +333,7 @@ if (empty($reshook)) {
 }
 
 if ($action == 'update_extras' && $permissiontoadd) {
-	$whClass = get_class($whClass);
-	$whClass::$oldcopy = dol_clone($tmpwarehouse, 2);
+	$tmpwarehouse->oldcopy = dol_clone($tmpwarehouse, 2);  // @phan-suppress-current-line PhanTypeMismatchProperty
 
 	// Fill array 'array_options' with data from update form
 	$ret = $extrafields->setOptionalsFromPost(null, $tmpwarehouse, GETPOST('attribute', 'restricthtml'));
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index d1cdb653234..993e6a07e68 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -246,11 +246,6 @@ class Project extends CommonObject
 	 */
 	public $email_msgid;
 
-	/**
-	 * @var ?static
-	 */
-	public $oldcopy;
-
 	/**
 	 * @var array<int,int> Used to store workload details of a projet (array[day])
 	 */
diff --git a/htdocs/resource/class/dolresource.class.php b/htdocs/resource/class/dolresource.class.php
index 40955b2f77c..75a96e391f6 100644
--- a/htdocs/resource/class/dolresource.class.php
+++ b/htdocs/resource/class/dolresource.class.php
@@ -131,11 +131,6 @@ class Dolresource extends CommonObject
 	 */
 	public $cache_code_type_resource;
 
-	/**
-	 * @var static Clone of object before changing it
-	 */
-	public $oldcopy;
-
 
 	/**
 	 *  Constructor
diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 5c244c10b62..e1e66ac6edf 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -133,11 +133,6 @@ class Societe extends CommonObject
 	 */
 	public $restrictiononfksoc = 1;
 
-	/**
-	 * @var static To store a cloned copy of object before to edit it and keep track of old properties
-	 */
-	public $oldcopy;
-
 	/**
 	 * array of supplier categories
 	 * @var string[]
diff --git a/htdocs/societe/paymentmodes.php b/htdocs/societe/paymentmodes.php
index 5e3dfee76c3..595943b5845 100644
--- a/htdocs/societe/paymentmodes.php
+++ b/htdocs/societe/paymentmodes.php
@@ -177,7 +177,7 @@ if (empty($reshook)) {
 		}
 
 		if (!$error) {
-			$companybankaccount->oldcopy = dol_clone($companybankaccount, 2);
+			$companybankaccount->oldcopy = dol_clone($companybankaccount, 2);  // @phan-suppress-current-line PhanTypeMismatchProperty
 
 			$companybankaccount->socid           = $object->id;
 
@@ -254,7 +254,7 @@ if (empty($reshook)) {
 
 		$companypaymentmode->fetch($id);
 		if (!$error) {
-			$companypaymentmode->oldcopy = dol_clone($companypaymentmode, 2);
+			$companypaymentmode->oldcopy = dol_clone($companypaymentmode, 2);  // @phan-suppress-current-line PhanTypeMismatchProperty
 
 			$companypaymentmode->fk_soc          = $object->id;
 
@@ -311,7 +311,7 @@ if (empty($reshook)) {
 			// Ajout
 			$companybankaccount = new CompanyBankAccount($db);
 
-			$companybankaccount->socid           = $object->id;
+			$companybankaccount->socid = $object->id;
 
 			$companybankaccount->fetch_thirdparty();
 
diff --git a/htdocs/ticket/class/ticket.class.php b/htdocs/ticket/class/ticket.class.php
index 848abcb4151..56cfb53ef9a 100644
--- a/htdocs/ticket/class/ticket.class.php
+++ b/htdocs/ticket/class/ticket.class.php
@@ -246,17 +246,11 @@ class Ticket extends CommonObject
 	 */
 	public $ip;
 
-	/**
-	 * @var static 	Save the ticket before an update operation (for triggers)
-	 */
-	public $oldcopy;
-
 	/**
 	 * @var Ticket[] Array of Tickets
 	 */
 	public $lines;
 
-
 	/**
 	 * @var string Regex pour les images
 	 */
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index f0b2ea132fa..975cbefb98a 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -75,11 +75,6 @@ class User extends CommonObject
 	 */
 	public $id = 0;
 
-	/**
-	 * @var static old copy of User
-	 */
-	public $oldcopy;
-
 	/**
 	 * @var int
 	 * @deprecated Use $status
diff --git a/htdocs/user/class/usergroup.class.php b/htdocs/user/class/usergroup.class.php
index e5232ca2e4b..f885c05951d 100644
--- a/htdocs/user/class/usergroup.class.php
+++ b/htdocs/user/class/usergroup.class.php
@@ -125,11 +125,6 @@ class UserGroup extends CommonObject
 	 */
 	public $all_permissions_are_loaded;
 
-	/**
-	 * @var static
-	 */
-	public $oldcopy; // To contains a clone of this when we need to save old properties of object
-
 	public $fields = array(
 		'rowid' => array('type' => 'integer', 'label' => 'TechnicalID', 'enabled' => 1, 'visible' => -2, 'notnull' => 1, 'index' => 1, 'position' => 1, 'comment' => 'Id'),
 		'entity' => array('type' => 'integer', 'label' => 'Entity', 'enabled' => 1, 'visible' => 0, 'notnull' => 1, 'default' => '1', 'index' => 1, 'position' => 5),