diff --git a/htdocs/accountancy/class/accountingaccount.class.php b/htdocs/accountancy/class/accountingaccount.class.php
index 257c2af0111..d8ad61dc7f1 100644
--- a/htdocs/accountancy/class/accountingaccount.class.php
+++ b/htdocs/accountancy/class/accountingaccount.class.php
@@ -46,8 +46,18 @@ class AccountingAccount extends CommonObject
 	public $restrictiononfksoc = 1;
 
 	var $db;
-	var $error;
-	var $errors;
+	
+	/**
+	 * @var string Error code (or message)
+	 */
+	public $error='';
+	
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	var $id;
 	var $rowid;
 	var $datec; // Creation date
diff --git a/htdocs/adherents/canvas/actions_adherentcard_common.class.php b/htdocs/adherents/canvas/actions_adherentcard_common.class.php
index f49d1cecb99..c452ef90665 100644
--- a/htdocs/adherents/canvas/actions_adherentcard_common.class.php
+++ b/htdocs/adherents/canvas/actions_adherentcard_common.class.php
@@ -43,8 +43,12 @@ abstract class ActionsAdherentCardCommon
 	var $object;
 	//! Error string
 	var $error;
-	//! Error array
-	var $errors=array();
+	
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 
 	/**
diff --git a/htdocs/comm/mailing/class/advtargetemailing.class.php b/htdocs/comm/mailing/class/advtargetemailing.class.php
index 50d9faf0637..05052b724f0 100644
--- a/htdocs/comm/mailing/class/advtargetemailing.class.php
+++ b/htdocs/comm/mailing/class/advtargetemailing.class.php
@@ -31,7 +31,12 @@ class AdvanceTargetingMailing extends CommonObject
 
 	var $db; //!< To store db handler
 	var $error; //!< To return error code (or message)
-	var $errors = array(); //!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	var $element='advtargetemailing';			//!< Id that identify managed objects
 	var $table_element='advtargetemailing';	//!< Name of table without prefix where object is stored
 
diff --git a/htdocs/compta/facture/class/paymentterm.class.php b/htdocs/compta/facture/class/paymentterm.class.php
index 3697a61672b..7e9524ad9af 100644
--- a/htdocs/compta/facture/class/paymentterm.class.php
+++ b/htdocs/compta/facture/class/paymentterm.class.php
@@ -30,7 +30,12 @@ class PaymentTerm // extends CommonObject
 {
 	var $db;							//!< To store db handler
 	var $error;							//!< To return error code (or message)
-	var $errors=array();				//!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	//public  $element='c_payment_term';			//!< Id that identify managed objects
 	//public  $table_element='c_payment_term';	//!< Name of table without prefix where object is stored
 	var $context =array();
diff --git a/htdocs/contact/canvas/actions_contactcard_common.class.php b/htdocs/contact/canvas/actions_contactcard_common.class.php
index ba96c865d1a..c8ef79bc72e 100644
--- a/htdocs/contact/canvas/actions_contactcard_common.class.php
+++ b/htdocs/contact/canvas/actions_contactcard_common.class.php
@@ -39,8 +39,12 @@ abstract class ActionsContactCardCommon
 	var $object;
 	//! Error string
 	var $error;
-	//! Error array
-	var $errors=array();
+	
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 
 	/**
diff --git a/htdocs/core/class/antivir.class.php b/htdocs/core/class/antivir.class.php
index b5f4f0e5539..ad31c60e664 100644
--- a/htdocs/core/class/antivir.class.php
+++ b/htdocs/core/class/antivir.class.php
@@ -32,7 +32,12 @@
 class AntiVir
 {
 	var $error;
-	var $errors;
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();;
+	
 	var $output;
 	var $db;
 
diff --git a/htdocs/core/class/canvas.class.php b/htdocs/core/class/canvas.class.php
index d9c496add4f..e5b984a255d 100644
--- a/htdocs/core/class/canvas.class.php
+++ b/htdocs/core/class/canvas.class.php
@@ -30,7 +30,11 @@ class Canvas
 {
 	var $db;
 	var $error;
-	var $errors=array();
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 	var $actiontype;
 
diff --git a/htdocs/core/class/ccountry.class.php b/htdocs/core/class/ccountry.class.php
index 7964510c91c..96d8ab69826 100644
--- a/htdocs/core/class/ccountry.class.php
+++ b/htdocs/core/class/ccountry.class.php
@@ -34,7 +34,12 @@ class Ccountry // extends CommonObject
 {
 	var $db;							//!< To store db handler
 	var $error;							//!< To return error code (or message)
-	var $errors=array();				//!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	//var $element='ccountry';			//!< Id that identify managed objects
 	//var $table_element='ccountry';	//!< Name of table without prefix where object is stored
 
diff --git a/htdocs/core/class/cstate.class.php b/htdocs/core/class/cstate.class.php
index ae2adde87d4..592962edf65 100644
--- a/htdocs/core/class/cstate.class.php
+++ b/htdocs/core/class/cstate.class.php
@@ -34,7 +34,12 @@ class Cstate // extends CommonObject
 {
 	var $db;							//!< To store db handler
 	var $error;							//!< To return error code (or message)
-	var $errors=array();				//!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	//var $element='cstate';			//!< Id that identify managed objects
 	//var $table_element='cstate';	    //!< Name of table without prefix where object is stored
 
diff --git a/htdocs/core/class/ctypent.class.php b/htdocs/core/class/ctypent.class.php
index b3bb750bd80..9b36ec470b4 100644
--- a/htdocs/core/class/ctypent.class.php
+++ b/htdocs/core/class/ctypent.class.php
@@ -29,7 +29,12 @@ class Ctypent // extends CommonObject
 {
 	var $db;							//!< To store db handler
 	var $error;							//!< To return error code (or message)
-	var $errors=array();				//!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
 	//var $element='ctypent';			//!< Id that identify managed objects
 	//var $table_element='ctypent';	//!< Name of table without prefix where object is stored
 
diff --git a/htdocs/core/class/dolreceiptprinter.class.php b/htdocs/core/class/dolreceiptprinter.class.php
index 2499176b58b..fbf05c99358 100644
--- a/htdocs/core/class/dolreceiptprinter.class.php
+++ b/htdocs/core/class/dolreceiptprinter.class.php
@@ -110,7 +110,11 @@ class dolReceiptPrinter extends Escpos
     var $printer;
     var $template;
     var $error;
-    var $errors;
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 
 
diff --git a/htdocs/core/class/hookmanager.class.php b/htdocs/core/class/hookmanager.class.php
index 439e31caae1..11d29b7a7ad 100644
--- a/htdocs/core/class/hookmanager.class.php
+++ b/htdocs/core/class/hookmanager.class.php
@@ -31,7 +31,11 @@ class HookManager
 {
 	var $db;
 	var $error;
-	var $errors=array();
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
     // Context hookmanager was created for ('thirdpartycard', 'thirdpartydao', ...)
     var $contextarray=array();
diff --git a/htdocs/core/class/interfaces.class.php b/htdocs/core/class/interfaces.class.php
index 655969d73f6..e6325df8836 100644
--- a/htdocs/core/class/interfaces.class.php
+++ b/htdocs/core/class/interfaces.class.php
@@ -33,7 +33,11 @@ class Interfaces
 {
     var $db;
 	var $dir;				// Directory with all core and external triggers files
-    var $errors	= array();	// Array for errors
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
     /**
      *	Constructor
diff --git a/htdocs/core/class/notify.class.php b/htdocs/core/class/notify.class.php
index 1cd676fe70b..c9d04b93dde 100644
--- a/htdocs/core/class/notify.class.php
+++ b/htdocs/core/class/notify.class.php
@@ -33,7 +33,11 @@ class Notify
 	var $id;
 	var $db;
 	var $error;
-	var $errors=array();
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 	var $author;
 	var $ref;
diff --git a/htdocs/core/modules/import/import_csv.modules.php b/htdocs/core/modules/import/import_csv.modules.php
index da94f7e72f9..aeaa6e58db2 100644
--- a/htdocs/core/modules/import/import_csv.modules.php
+++ b/htdocs/core/modules/import/import_csv.modules.php
@@ -40,7 +40,12 @@ class ImportCsv extends ModeleImports
 	 * @var string Error code (or message)
 	 */
 	public $error='';
-	var $errors=array();
+	
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
     var $id;           // Id of driver
 	var $label;        // Label of driver
diff --git a/htdocs/core/modules/import/import_xlsx.modules.php b/htdocs/core/modules/import/import_xlsx.modules.php
index 80158466103..0c610f469b0 100644
--- a/htdocs/core/modules/import/import_xlsx.modules.php
+++ b/htdocs/core/modules/import/import_xlsx.modules.php
@@ -40,7 +40,12 @@ class ImportXlsx extends ModeleImports
 	 * @var string Error code (or message)
 	 */
 	public $error='';
-	var $errors=array();
+	
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
     var $id;           // Id of driver
 	var $label;        // Label of driver
diff --git a/htdocs/core/modules/printing/printgcp.modules.php b/htdocs/core/modules/printing/printgcp.modules.php
index 7cda95174c2..8e4eafeb7b8 100644
--- a/htdocs/core/modules/printing/printgcp.modules.php
+++ b/htdocs/core/modules/printing/printgcp.modules.php
@@ -43,7 +43,12 @@ class printing_printgcp extends PrintingDriver
     var $google_id = '';
     var $google_secret = '';
     var $error;
-    var $errors = array();
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
     var $db;
 
     private $OAUTH_SERVICENAME_GOOGLE = 'Google';
diff --git a/htdocs/core/modules/printing/printipp.modules.php b/htdocs/core/modules/printing/printipp.modules.php
index 94d14426b55..168c411ec29 100644
--- a/htdocs/core/modules/printing/printipp.modules.php
+++ b/htdocs/core/modules/printing/printipp.modules.php
@@ -41,7 +41,12 @@ class printing_printipp extends PrintingDriver
     var $user;
     var $password;
     var $error;
-    var $errors = array();
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
     var $db;
 
 
diff --git a/htdocs/imports/class/import.class.php b/htdocs/imports/class/import.class.php
index f8754193515..bc4873770fd 100644
--- a/htdocs/imports/class/import.class.php
+++ b/htdocs/imports/class/import.class.php
@@ -44,7 +44,11 @@ class Import
 	var $array_import_run_sql_after;
 
 	var $error;
-	var $errors;
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 
 	/**
diff --git a/htdocs/product/dynamic_price/class/price_expression.class.php b/htdocs/product/dynamic_price/class/price_expression.class.php
index 5ce3068c144..c5bf6808fac 100644
--- a/htdocs/product/dynamic_price/class/price_expression.class.php
+++ b/htdocs/product/dynamic_price/class/price_expression.class.php
@@ -31,7 +31,12 @@ class PriceExpression
 {
 	var $db;							//!< To store db handler
 	var $error;							//!< To return error code (or message)
-	var $errors=array();				//!< To return several error codes (or messages)
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
     var $id;
     var $title;
 	var $expression;
diff --git a/htdocs/product/dynamic_price/class/price_global_variable.class.php b/htdocs/product/dynamic_price/class/price_global_variable.class.php
index 97a3ee1f4e6..1432afcfdeb 100644
--- a/htdocs/product/dynamic_price/class/price_global_variable.class.php
+++ b/htdocs/product/dynamic_price/class/price_global_variable.class.php
@@ -31,7 +31,12 @@ class PriceGlobalVariable
 {
     var $db;							//!< To store db handler
     var $error;							//!< To return error code (or message)
-    var $errors=array();				//!< To return several error codes (or messages)
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
     var $id;
     var $code;
     var $description;
diff --git a/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php b/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
index f4595062098..37a3e116683 100644
--- a/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
+++ b/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
@@ -31,7 +31,12 @@ class PriceGlobalVariableUpdater
 {
     var $db;							//!< To store db handler
     var $error;							//!< To return error code (or message)
-    var $errors=array();				//!< To return several error codes (or messages)
+    /**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
+	
     var $types=array(0, 1);				//!< Updater types
     var $update_min = 5;				//!< Minimal update rate
     var $id;
diff --git a/htdocs/societe/canvas/actions_card_common.class.php b/htdocs/societe/canvas/actions_card_common.class.php
index 37082f4140b..da51ebc03d9 100644
--- a/htdocs/societe/canvas/actions_card_common.class.php
+++ b/htdocs/societe/canvas/actions_card_common.class.php
@@ -39,8 +39,11 @@ abstract class ActionsCardCommon
 	var $object;
 	//! Error string
 	var $error;
-	//! Error array
-	var $errors=array();
+	/**
+	 *
+	 * @var string[] Error codes (or messages)
+	 */
+	public $errors = array ();
 
 
 	/**