diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 014fd0e6943..2a48858c9f6 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2405,7 +2405,7 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 	// Analyze date
 	$reg = array();
 	if (preg_match('/^([0-9][0-9][0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])$/i', $time, $reg)) {	// Deprecated. Ex: 1970-01-01, 1970-01-01 01:00:00, 19700101010000
-		dol_print_error("Functions.lib::dol_print_date function called with a bad value from page ".$_SERVER["PHP_SELF"]);
+		dol_print_error('', "Functions.lib::dol_print_date function called with a bad value from page ".$_SERVER["PHP_SELF"]);
 		return '';
 	} elseif (preg_match('/^([0-9]+)\-([0-9]+)\-([0-9]+) ?([0-9]+)?:?([0-9]+)?:?([0-9]+)?/i', $time, $reg)) {    // Still available to solve problems in extrafields of type date
 		// This part of code should not be used anymore.
@@ -3674,9 +3674,9 @@ function img_picto($titlealt, $picto, $moreatt = '', $pictoisfullpath = false, $
 				'member'=>'user-alt', 'meeting'=>'chalkboard-teacher', 'mrp'=>'cubes', 'next'=>'arrow-alt-circle-right',
 				'trip'=>'wallet', 'expensereport'=>'wallet', 'group'=>'users', 'movement'=>'people-carry',
 				'sign-out'=>'sign-out-alt',
-				'switch_off'=>'toggle-off', 'switch_on'=>'toggle-on', 'switch_on_red'=>'toggle-on', 'check'=>'check', 'bookmark'=>'star', 'bookmark'=>'star',
-				'bank'=>'university', 'close_title'=>'times', 'delete'=>'trash', 'edit'=>'pencil-alt', 'filter'=>'filter',
-				'list-alt'=>'list-alt', 'calendar'=>'calendar-alt', 'calendarmonth'=>'calendar-alt', 'calendarweek'=>'calendar-week', 'calendarmonth'=>'calendar-alt', 'calendarday'=>'calendar-day', 'calendarperuser'=>'table',
+				'switch_off'=>'toggle-off', 'switch_on'=>'toggle-on', 'switch_on_red'=>'toggle-on', 'check'=>'check', 'bookmark'=>'star',
+				'bank'=>'university', 'close_title'=>'times', 'delete'=>'trash', 'filter'=>'filter',
+				'list-alt'=>'list-alt', 'calendar'=>'calendar-alt', 'calendarmonth'=>'calendar-alt', 'calendarweek'=>'calendar-week', 'calendarday'=>'calendar-day', 'calendarperuser'=>'table',
 				'intervention'=>'ambulance', 'invoice'=>'file-invoice-dollar', 'multicurrency'=>'dollar-sign', 'order'=>'file-invoice',
 				'error'=>'exclamation-triangle', 'warning'=>'exclamation-triangle',
 				'other'=>'square',
@@ -3686,7 +3686,7 @@ function img_picto($titlealt, $picto, $moreatt = '', $pictoisfullpath = false, $
 				'resize'=>'crop', 'supplier_order'=>'dol-order_supplier', 'supplier_proposal'=>'file-signature',
 				'refresh'=>'redo', 'region'=>'map-marked', 'resource'=>'laptop-house',
 				'state'=>'map-marked-alt', 'security'=>'key', 'salary'=>'wallet', 'shipment'=>'dolly', 'stock'=>'box-open', 'stats' => 'chart-bar', 'split'=>'code-branch', 'stripe'=>'stripe-s',
-				'supplier'=>'building', 'supplier_invoice'=>'file-invoice-dollar', 'technic'=>'cogs', 'ticket'=>'ticket-alt',
+				'supplier'=>'building', 'technic'=>'cogs',
 				'timespent'=>'clock', 'title_setup'=>'tools', 'title_accountancy'=>'money-check-alt', 'title_bank'=>'university', 'title_hrm'=>'umbrella-beach',
 				'title_agenda'=>'calendar-alt',
 				'uncheck'=>'times', 'uparrow'=>'share', 'vcard'=>'address-card',
@@ -4477,7 +4477,7 @@ function info_admin($text, $infoonimgalt = 0, $nodiv = 0, $admin = '1', $morecss
 		$result = ($nodiv ? '' : '<div class="'.$class.' hideonsmartphone'.($morecss ? ' '.$morecss : '').($textfordropdown ? ' hidden' : '').'">').'<span class="fa fa-info-circle" title="'.dol_escape_htmltag($admin ? $langs->trans('InfoAdmin') : $langs->trans('Note')).'"></span> '.$text.($nodiv ? '' : '</div>');
 
 		if ($textfordropdown) {
-			$tmpresult .= '<span class="'.$class.'text opacitymedium cursorpointer">'.$langs->trans($textfordropdown).' '.img_picto($langs->trans($textfordropdown), '1downarrow').'</span>';
+			$tmpresult = '<span class="'.$class.'text opacitymedium cursorpointer">'.$langs->trans($textfordropdown).' '.img_picto($langs->trans($textfordropdown), '1downarrow').'</span>';
 			$tmpresult .= '<script type="text/javascript" language="javascript">
 				jQuery(document).ready(function() {
 					jQuery(".'.$class.'text").click(function() {
@@ -4500,7 +4500,7 @@ function info_admin($text, $infoonimgalt = 0, $nodiv = 0, $admin = '1', $morecss
  *  This function must be called when a blocking technical error is encountered.
  *  However, one must try to call it only within php pages, classes must return their error through their property "error".
  *
- *	@param	 	DoliDB          $db      	Database handler
+ *	@param	 	DoliDB?          $db      	Database handler
  *	@param  	string|string[] $error		String or array of errors strings to show
  *  @param		array           $errors		Array of errors
  *	@return 	void
@@ -4828,7 +4828,7 @@ function getTitleFieldOfList($name, $thead = 0, $file = "", $field = "", $begin
  *	Show a title.
  *
  *	@param	string	$title			Title to show
- *	@return	string					Title to show
+ *  @return	void
  *  @deprecated						Use load_fiche_titre instead
  *  @see load_fiche_titre()
  */
@@ -5195,7 +5195,7 @@ function vatrate($rate, $addpercent = false, $info_bits = 0, $usestarfornpr = 0)
  *
  *		@param	float		$amount			Amount to format
  *		@param	integer		$form			Type of format, HTML or not (not by default)
- *		@param	Translate	$outlangs		Object langs for output
+ *		@param	Translate?	$outlangs		Object langs for output
  *		@param	int			$trunc			1=Truncate if there is more decimals than MAIN_MAX_DECIMALS_SHOWN (default), 0=Does not truncate. Deprecated because amount are rounded (to unit or total amount accurancy) before beeing inserted into database or after a computation, so this parameter should be useless.
  *		@param	int			$rounding		Minimum number of decimal to show. If 0, no change, if -1, we use min($conf->global->MAIN_MAX_DECIMALS_UNIT,$conf->global->MAIN_MAX_DECIMALS_TOT)
  *		@param	int			$forcerounding	Force the number of decimal to forcerounding decimal (-1=do not force)
@@ -5856,7 +5856,7 @@ function get_product_vat_for_country($idprod, $thirdpartytouse, $idprodfournpric
 						$ret .= ' ('.$obj->default_vat_code.')';
 					}
 				}
-				$db->free($sql);
+				$db->free($resql);
 			} else {
 				dol_print_error($db);
 			}
@@ -8826,7 +8826,7 @@ function dolExplodeIntoArray($string, $delimiter = ';', $kv = '=')
  * Set focus onto field with selector (similar behaviour of 'autofocus' HTML5 tag)
  *
  * @param 	string	$selector	Selector ('#id' or 'input[name="ref"]') to use to find the HTML input field that must get the autofocus. You must use a CSS selector, so unique id preceding with the '#' char.
- * @return	string				HTML code to set focus
+ * @return	void
  */
 function dol_set_focus($selector)
 {