diff --git a/src/includes/class/class.LSattr_html_image.php b/src/includes/class/class.LSattr_html_image.php
index 35848bea..f7f8fa32 100644
--- a/src/includes/class/class.LSattr_html_image.php
+++ b/src/includes/class/class.LSattr_html_image.php
@@ -47,14 +47,8 @@ class LSattr_html_image extends LSattr_html {
       LSerror :: addErrorCode('LSattr_html_03','password');
     }
 
-    if ($data) {
-      if(is_array($data)) {
-        $element -> setValue($data[0]);
-      }
-      else {
-        $element -> setValue($data);
-      }
-    }
+    if ($data)
+      $element -> setValue(ensureIsArray($data)[0]);
     return $element;
   }
 
diff --git a/src/includes/class/class.LSattr_html_password.php b/src/includes/class/class.LSattr_html_password.php
index b6875a23..c3d08054 100644
--- a/src/includes/class/class.LSattr_html_password.php
+++ b/src/includes/class/class.LSattr_html_password.php
@@ -44,14 +44,10 @@ class LSattr_html_password extends LSattr_html {
     }
 
     if ($data) {
-      if(is_array($data)) {
-        if (count($data)>1)
-          LSerror :: addErrorCode('LSattr_html_03','password');
-        $element -> setValue($data[0]);
-      }
-      else {
-        $element -> setValue($data);
-      }
+      $data = ensureIsArray($data);
+      if (count($data) > 1)
+        LSerror :: addErrorCode('LSattr_html_03', 'password');
+      $element -> setValue($data[0]);
     }
     return $element;
   }
diff --git a/src/includes/class/class.LSattr_html_select_list.php b/src/includes/class/class.LSattr_html_select_list.php
index d17df156..aa75398a 100644
--- a/src/includes/class/class.LSattr_html_select_list.php
+++ b/src/includes/class/class.LSattr_html_select_list.php
@@ -283,8 +283,7 @@ class LSattr_html_select_list extends LSattr_html{
       $list = $LSsearch -> getSearchEntries();
       foreach($list as $entry) {
         $keys = $entry -> get($conf['values_attribute']);
-        if (!is_array($keys)) $keys=array($keys);
-        foreach ($keys as $key) {
+        foreach (ensureIsArray($keys) as $key) {
           $retInfos[$key]=$key;
         }
       }
@@ -312,11 +311,7 @@ class LSattr_html_select_list extends LSattr_html{
     $retInfos=array();
     if (is_string($attr)) {
       if (isset($ldapObject->attrs[$attr]) && $ldapObject->attrs[$attr] instanceof LSattribute) {
-        $attr_values = $ldapObject->attrs[$attr]->getValue();
-        if (!$attr_values)
-          $attr_values = array();
-        elseif (!is_array($attr_values))
-          $attr_values = array($attr_values);
+        $attr_values = ensureIsArray($ldapObject->attrs[$attr]->getValue());
         if (isset($options['translate_labels']) && !$options['translate_labels']) {
           foreach($attr_values as $attr_value)
             $retInfos[$attr_value] = $attr_value;
@@ -334,11 +329,7 @@ class LSattr_html_select_list extends LSattr_html{
         if (isset($ldapObject->attrs[$attr['attr']]) && $ldapObject->attrs[$attr['attr']] instanceof LSattribute) {
           if (isset($attr['json_component_key'])) {
             if (get_class($ldapObject->attrs[$attr['attr']]->html) == 'LSattr_html_jsonCompositeAttribute') {
-              $attr_values = $ldapObject->attrs[$attr['attr']]->getValue();
-              if (!$attr_values)
-                $attr_values = array();
-              elseif (!is_array($attr_values))
-                $attr_values = array($attr_values);
+              $attr_values = ensureIsArray($ldapObject->attrs[$attr['attr']]->getValue());
               foreach($attr_values as $attr_value) {
                 $value_data = @json_decode($attr_value, true);
                 if (!isset($value_data[$attr['json_component_key']])) {
diff --git a/src/includes/class/class.LSattr_html_select_object.php b/src/includes/class/class.LSattr_html_select_object.php
index 66489a56..4af509bb 100644
--- a/src/includes/class/class.LSattr_html_select_object.php
+++ b/src/includes/class/class.LSattr_html_select_object.php
@@ -46,10 +46,7 @@ class LSattr_html_select_object extends LSattr_html{
       return;
     }
     if ($data) {
-      if (!is_array($data)) {
-        $data=array($data);
-      }
-      $values=$this -> getFormValues($data);
+      $values = $this -> getFormValues(ensureIsArray($data));
       if ($values) {
         $element -> setValue($values);
       }
diff --git a/src/includes/class/class.LSattribute.php b/src/includes/class/class.LSattribute.php
index 2c917503..261268b2 100644
--- a/src/includes/class/class.LSattribute.php
+++ b/src/includes/class/class.LSattribute.php
@@ -184,10 +184,8 @@ class LSattribute extends LSlog_staticLoggerClass {
 
     $onDisplay = $this -> getConfig('onDisplay');
     if ($onDisplay) {
-      if (!is_array($onDisplay))
-        $onDisplay = array($onDisplay);
       $result = $data;
-      foreach($onDisplay as $func) {
+      foreach(ensureIsArray($onDisplay) as $func) {
         if (function_exists($func)) {
           $result = call_user_func($func, $result);
         }
@@ -615,8 +613,7 @@ class LSattribute extends LSlog_staticLoggerClass {
     self :: log_debug(strval($this)." -> fireEvent($event)");
     $return = true;
     if(isset($this -> config[$event])) {
-      $funcs = (!is_array($this -> config[$event])?array($this -> config[$event]):$this -> config[$event]);
-      foreach($funcs as $func) {
+      foreach(ensureIsArray($this -> config[$event]) as $func) {
         if(function_exists($func)) {
           self :: log_debug(strval($this)." -> fireEvent($event): run ".format_callable($func));
           if(!call_user_func_array($func, array(&$this -> ldapObject))) {
diff --git a/src/includes/class/class.LSformElement.php b/src/includes/class/class.LSformElement.php
index 0b2e0356..5f52c490 100644
--- a/src/includes/class/class.LSformElement.php
+++ b/src/includes/class/class.LSformElement.php
@@ -87,11 +87,7 @@ class LSformElement extends LSlog_staticLoggerClass {
    * @retval boolean Retourne True
    */
   public function setValue($data) {
-    if (!is_array($data)) {
-      $data=array($data);
-    }
-
-    $this -> values = $data;
+    $this -> values = ensureIsArray($data);
     return true;
   }
 
@@ -109,10 +105,7 @@ class LSformElement extends LSlog_staticLoggerClass {
    * @retval boolean Retourne True
    */
   public function setValueFromPostData($data) {
-    if (!is_array($data)) {
-      $data=array($data);
-    }
-    $this -> values = $data;
+    $this -> values = ensureIsArray($data);
     return true;
   }
 
@@ -137,12 +130,7 @@ class LSformElement extends LSlog_staticLoggerClass {
    * @retval void
    */
   public function addValue($data) {
-    if (is_array($data)) {
-      $this -> values = array_merge($this -> values, $data);
-    }
-    else {
-      $this -> values[] = $data;
-    }
+    $this -> values = array_merge($this -> values, ensureIsArray($data));
   }
 
   /**
@@ -253,10 +241,8 @@ class LSformElement extends LSlog_staticLoggerClass {
    */
   protected static function getData(&$post, $name) {
     if (isset($post[$name])) {
-      $return=array();
-      if(!is_array($post[$name])) {
-        $post[$name] = array($post[$name]);
-      }
+      $return = array();
+      $post[$name] = ensureIsArray($post[$name]);
       foreach($post[$name] as $key => $val) {
         if (!is_empty($val)) {
           $return[$key] = $val;
diff --git a/src/includes/class/class.LSformElement_date.php b/src/includes/class/class.LSformElement_date.php
index 01406b54..b2a7a921 100644
--- a/src/includes/class/class.LSformElement_date.php
+++ b/src/includes/class/class.LSformElement_date.php
@@ -74,12 +74,9 @@ class LSformElement_date extends LSformElement {
    * @retval boolean Retourne True
    */
   public function setValue($data) {
-    if (!is_array($data)) {
-      $data=array($data);
-    }
     $special_values = $this -> getSpecialValues();
     $values = array();
-    foreach ($data as $value) {
+    foreach (ensureIsArray($data) as $value) {
       if(is_numeric($value)) {
         if (array_key_exists($value, $special_values)) {
           $values[] = $special_values[$value];
@@ -239,11 +236,7 @@ class LSformElement_date extends LSformElement {
       }
     }
     else {
-      if(!is_array($values))
-        $values = array();
-      if(!is_array($special_values))
-        $special_values = array();
-      $return[$this -> name] = $special_values + $values;
+      $return[$this -> name] = ensureIsArray($special_values) + ensureIsArray($values);
       self :: log_trace($this." -> merged values=".varDump($return[$this -> name]));
     }
     return true;
diff --git a/src/includes/class/class.LSformElement_jsonCompositeAttribute.php b/src/includes/class/class.LSformElement_jsonCompositeAttribute.php
index 2fcdf036..24b5102b 100644
--- a/src/includes/class/class.LSformElement_jsonCompositeAttribute.php
+++ b/src/includes/class/class.LSformElement_jsonCompositeAttribute.php
@@ -151,9 +151,7 @@ class LSformElement_jsonCompositeAttribute extends LSformElement {
   protected function translateComponentValue($c,$value,$inLoop=false) {
     if (!$inLoop && isset($this -> components[$c]['multiple']) && $this -> components[$c]['multiple']) {
       $retval = array();
-      if (!is_array($value))
-        $value = array($value);
-      foreach($value as $val)
+      foreach(ensureIsArray($value) as $val)
         $retval[] = $this -> translateComponentValue($c, $val, true);
     }
     else {
diff --git a/src/includes/class/class.LSformElement_labeledValue.php b/src/includes/class/class.LSformElement_labeledValue.php
index cc03dcc4..0ebed417 100644
--- a/src/includes/class/class.LSformElement_labeledValue.php
+++ b/src/includes/class/class.LSformElement_labeledValue.php
@@ -121,15 +121,11 @@ class LSformElement_labeledValue extends LSformElement {
       return true;
     }
     if (isset($_POST[$this -> name."_labels"]) && isset($_POST[$this -> name."_values"])) {
-      $return[$this -> name]=array();
-      if(!is_array($_POST[$this -> name."_labels"])) {
-        $_POST[$this -> name."_labels"] = array($_POST[$this -> name."_labels"]);
-      }
-      if(!is_array($_POST[$this -> name."_values"])) {
-        $_POST[$this -> name."_values"] = array($_POST[$this -> name."_values"]);
-      }
+      $return[$this -> name] = array();
+      $_POST[$this -> name."_labels"] = ensureIsArray($_POST[$this -> name."_labels"]);
+      $_POST[$this -> name."_values"] = ensureIsArray($_POST[$this -> name."_values"]);
       foreach($_POST[$this -> name."_labels"] as $key => $label) {
-        $val=$_POST[$this -> name."_values"][$key];
+        $val = $_POST[$this -> name."_values"][$key];
         if (!empty($label) && !is_empty($val)) {
           $return[$this -> name][$key] = "[$label]$val";
         }
diff --git a/src/includes/class/class.LSformElement_mail.php b/src/includes/class/class.LSformElement_mail.php
index 55484a3b..66547ce7 100644
--- a/src/includes/class/class.LSformElement_mail.php
+++ b/src/includes/class/class.LSformElement_mail.php
@@ -85,8 +85,7 @@ class LSformElement_mail extends LSformElement_text {
   public function autocomplete($pattern) {
     $ret = array();
     if ($this -> getParam('html_options.autocomplete')) {
-      $mail_attributes = $this -> getParam('html_options.autocomplete.mail_attributes', array('mail'));
-      if (!is_array($mail_attributes)) $mail_attributes = array($mail_attributes);
+      $mail_attributes = ensureIsArray($this -> getParam('html_options.autocomplete.mail_attributes', array('mail')));
 
       $obj_type = $this -> getParam('html_options.autocomplete.object_type');
       if ($obj_type) {
@@ -124,9 +123,8 @@ class LSformElement_mail extends LSformElement_text {
           $search -> run();
           foreach($search -> getSearchEntries() as $e) {
             foreach($mail_attributes as $attr) {
-              $mails = $e->get($attr);
+              $mails = ensureIsArray($e->get($attr));
               if (!$mails) continue;
-              if (!is_array($mails)) $mails = array($mails);
               foreach($mails as $mail)
                 $ret[$mail] = $e->displayName;
             }
@@ -170,8 +168,7 @@ class LSformElement_mail extends LSformElement_text {
             $displayName = ($displayNameFormat?getFData($displayNameFormat, $object['attrs']):null);
             foreach($mail_attributes as $attr) {
               if (!isset($object['attrs'][$attr])) continue;
-              $mails = $object['attrs'][$attr];
-              if (!is_array($mails)) $mails = array($mails);
+              $mails = ensureIsArray($object['attrs'][$attr]);
               foreach($mails as $mail)
                 $ret[$mail] = ($displayName?$displayName:$mail);
             }
diff --git a/src/includes/class/class.LSformElement_mailQuota.php b/src/includes/class/class.LSformElement_mailQuota.php
index f3868579..0d60ae73 100644
--- a/src/includes/class/class.LSformElement_mailQuota.php
+++ b/src/includes/class/class.LSformElement_mailQuota.php
@@ -139,9 +139,7 @@ class LSformElement_mailQuota extends LSformElement {
     }
     if (isset($_POST[$this -> name.'_size'])) {
       $return[$this -> name]=array();
-      if(!is_array($_POST[$this -> name.'_size'])) {
-        $_POST[$this -> name.'_size'] = array($_POST[$this -> name.'_size']);
-      }
+      $_POST[$this -> name.'_size'] = ensureIsArray($_POST[$this -> name.'_size']);
       if(isset($_POST[$this -> name.'_sizeFact']) && !is_array($_POST[$this -> name.'_sizeFact'])) {
         $_POST[$this -> name.'_sizeFact'] = array($_POST[$this -> name.'_sizeFact']);
       }
diff --git a/src/includes/class/class.LSformElement_password.php b/src/includes/class/class.LSformElement_password.php
index 8c41b777..393f4996 100644
--- a/src/includes/class/class.LSformElement_password.php
+++ b/src/includes/class/class.LSformElement_password.php
@@ -278,19 +278,14 @@ class LSformElement_password extends LSformElement {
       $mail = (String)$this -> sendMail['mail'];
       self :: log_debug("send(): mail from params: '$mail'");
       if (!$mail) {
-        $mail_attrs = $this -> getMailAttrs();
-        if (!is_array($mail_attrs)) {
-          $mail_attrs=array($mail_attrs);
-        }
+        $mail_attrs = ensureIsArray($this -> getMailAttrs());
         self :: log_debug('send(): mail attrs: '.varDump($mail_attrs));
         $checkDomainsList = $this -> getParam('html_options.mail.domain');
         $checkDomain = $this -> getParam('html_options.mail.checkDomain', true, 'bool');
         foreach($mail_attrs as $attr) {
           $mail_attr = $this -> attr_html -> attribute -> ldapObject -> attrs[$attr];
           if ($mail_attr instanceOf LSattribute) {
-            $mail_values = $mail_attr -> getValue();
-            if (!is_array($mail_values))
-              $mail_values = array($mail_values);
+            $mail_values = ensureIsArray($mail_attr -> getValue());
             foreach($mail_values as $mail_value) {
               if ($mail_value && checkEmail($mail_value, $checkDomainsList, $checkDomain)) {
                 $mail = $mail_value;
diff --git a/src/includes/class/class.LSformElement_quota.php b/src/includes/class/class.LSformElement_quota.php
index e4c68ccc..66d5bf99 100644
--- a/src/includes/class/class.LSformElement_quota.php
+++ b/src/includes/class/class.LSformElement_quota.php
@@ -130,9 +130,7 @@ class LSformElement_quota extends LSformElement {
     }
     if (isset($_POST[$this -> name.'_size'])) {
       $return[$this -> name]=array();
-      if(!is_array($_POST[$this -> name.'_size'])) {
-        $_POST[$this -> name.'_size'] = array($_POST[$this -> name.'_size']);
-      }
+      $_POST[$this -> name.'_size'] = ensureIsArray($_POST[$this -> name.'_size']);
       if(isset($_POST[$this -> name.'_sizeFact']) && !is_array($_POST[$this -> name.'_sizeFact'])) {
         $_POST[$this -> name.'_sizeFact'] = array($_POST[$this -> name.'_sizeFact']);
       }
diff --git a/src/includes/class/class.LSformElement_valueWithUnit.php b/src/includes/class/class.LSformElement_valueWithUnit.php
index d8fd0d72..c80337f3 100644
--- a/src/includes/class/class.LSformElement_valueWithUnit.php
+++ b/src/includes/class/class.LSformElement_valueWithUnit.php
@@ -159,9 +159,7 @@ class LSformElement_valueWithUnit extends LSformElement {
     }
     $return[$this -> name]=array();
     if (isset($_POST[$this -> name.'_valueWithUnit'])) {
-      if(!is_array($_POST[$this -> name.'_valueWithUnit'])) {
-        $_POST[$this -> name.'_valueWithUnit'] = array($_POST[$this -> name.'_valueWithUnit']);
-      }
+      $_POST[$this -> name.'_valueWithUnit'] = ensureIsArray($_POST[$this -> name.'_valueWithUnit']);
       if(isset($_POST[$this -> name.'_unitFact']) && !is_array($_POST[$this -> name.'_unitFact'])) {
         $_POST[$this -> name.'_unitFact'] = array($_POST[$this -> name.'_unitFact']);
       }
@@ -186,16 +184,12 @@ class LSformElement_valueWithUnit extends LSformElement {
       }
     }
     if (isset($_POST[$this -> name])) {
-      if(!is_array($_POST[$this -> name])) {
-        $_POST[$this -> name] = array($_POST[$this -> name]);
-      }
-      $return[$this -> name]=array_merge($return[$this -> name],$_POST[$this -> name]);
+      $_POST[$this -> name] = ensureIsArray($_POST[$this -> name]);
+      $return[$this -> name] = array_merge($return[$this -> name], $_POST[$this -> name]);
     }
     if (isset($_POST[$this -> name.'_value'])) {
-      if (!is_array($_POST[$this -> name.'_value'])) {
-        $_POST[$this -> name.'_value']=array($_POST[$this -> name.'_value']);
-      }
-      $return[$this -> name]=array_merge($return[$this -> name],$_POST[$this -> name.'_value']);
+      $_POST[$this -> name.'_value'] = ensureIsArray($_POST[$this -> name.'_value']);
+      $return[$this -> name] = array_merge($return[$this -> name], $_POST[$this -> name.'_value']);
     }
     return true;
   }
diff --git a/src/includes/class/class.LSformRule_differentPassword.php b/src/includes/class/class.LSformRule_differentPassword.php
index c7f5e891..c1a1adc6 100644
--- a/src/includes/class/class.LSformRule_differentPassword.php
+++ b/src/includes/class/class.LSformRule_differentPassword.php
@@ -40,10 +40,6 @@ class LSformRule_differentPassword extends LSformRule {
   public static function validate($value, $options=array(), &$formElement) {
     $otherPasswordAttributes = LSconfig :: get('params.otherPasswordAttributes', null, null, $options);
     if (!is_null($otherPasswordAttributes)) {
-      // Make sure otherPasswordAttributes is an array
-      if (!is_array($otherPasswordAttributes))
-        $otherPasswordAttributes = array($otherPasswordAttributes);
-
       // Load LSattr_ldap_password
       if (!LSsession :: loadLSclass("LSattr_ldap_password")) {
         LSerror :: addErrorCode('LSformRule_differentPassword_02');
@@ -51,7 +47,7 @@ class LSformRule_differentPassword extends LSformRule {
       }
 
       // Iter on otherPasswordAttributes to check password does not match
-      foreach($otherPasswordAttributes as $attr) {
+      foreach(ensureIsArray($otherPasswordAttributes) as $attr) {
         // Check attribute exist
         if (!isset($formElement -> attr_html -> attribute -> ldapObject -> attrs[$attr])) {
           LSerror :: addErrorCode('LSformRule_differentPassword_03', $attr);
diff --git a/src/includes/class/class.LSformRule_mimetype.php b/src/includes/class/class.LSformRule_mimetype.php
index 855682e3..417eb9ac 100644
--- a/src/includes/class/class.LSformRule_mimetype.php
+++ b/src/includes/class/class.LSformRule_mimetype.php
@@ -42,17 +42,9 @@ class LSformRule_mimetype extends LSformRule {
     $file = LSsession :: getTmpFile($value);
     $real_mimetype = mime_content_type($file);
 
-    $mimetype = LSconfig :: get('params.mimeType', null, null, $options);
-    if (!is_null($mimetype)) {
-      if (is_array($mimetype)) {
-        if (!in_array($real_mimetype, $mimetype))
-          return;
-      }
-      else {
-        if ($real_mimetype != $mimetype)
-          return;
-      }
-    }
+    $mimetypes = ensureIsArray(LSconfig :: get('params.mimeType', null, null, $options));
+    if ($mimetypes && !in_array($real_mimetype, $mimetypes))
+      return false;
 
     $mimeTypeRegEx = LSconfig :: get('params.mimeTypeRegEx', null, 'string', $options);
     if (is_string($mimeTypeRegEx) && !preg_match($mimeTypeRegEx, $real_mimetype))
diff --git a/src/includes/class/class.LSformRule_password.php b/src/includes/class/class.LSformRule_password.php
index eacf8082..9942ef7e 100644
--- a/src/includes/class/class.LSformRule_password.php
+++ b/src/includes/class/class.LSformRule_password.php
@@ -56,11 +56,8 @@ class LSformRule_password extends LSformRule {
       return;
     }
 
-    $regex = LSconfig :: get('params.regex', null, null, $options);
-    if(!is_null($regex)) {
-      if (!is_array($regex))
-        $regex = array($regex);
-
+    $regex = ensureIsArray(LSconfig :: get('params.regex', null, null, $options));
+    if($regex) {
       $minValidRegex = LSconfig :: get('params.minValidRegex', count($regex), 'int', $options);
       if ($minValidRegex == 0 || $minValidRegex > count($regex))
         $minValidRegex = count($regex);
@@ -85,8 +82,8 @@ class LSformRule_password extends LSformRule {
       }
     }
 
-    $prohibitedValues = LSconfig :: get('params.prohibitedValues', null, null, $options);
-    if(is_array($prohibitedValues) && in_array($value, $prohibitedValues)) {
+    $prohibitedValues = ensureIsArray(LSconfig :: get('params.prohibitedValues', null, null, $options));
+    if(in_array($value, $prohibitedValues)) {
       self :: log_debug("this password is prohibited");
       return;
     }
diff --git a/src/includes/class/class.LSldapObject.php b/src/includes/class/class.LSldapObject.php
index 773043bb..ddbb3ec6 100644
--- a/src/includes/class/class.LSldapObject.php
+++ b/src/includes/class/class.LSldapObject.php
@@ -1354,25 +1354,24 @@ class LSldapObject extends LSlog_staticLoggerClass {
    *
    * @retval Mixed La valeur clef d'un objet en relation
    **/
-  public static function getObjectKeyValueInRelation($object,$objectType,$attrValues='dn') {
+  public static function getObjectKeyValueInRelation($object, $objectType, $attrValues='dn') {
     if (!$objectType) {
       LSerror :: addErrorCode('LSrelation_05','getObjectKeyValueInRelation');
       return;
     }
-    if (!is_array($attrValues)) $attrValues=array($attrValues);
-    $keyValues=array();
-    foreach ($attrValues as $attrValue) {
-      if ($attrValue=='dn') {
+    $keyValues = array();
+    foreach (ensureIsArray($attrValues) as $attrValue) {
+      if ($attrValue == 'dn') {
         $dn=$object -> getDn();
-        if (!in_array($dn,$keyValues))
+        if (!in_array($dn, $keyValues))
           $keyValues[] = $dn;
       }
       else {
-        $values=$object -> getValue($attrValue);
+        $values = $object -> getValue($attrValue);
         if (is_array($values))
           foreach ($values as $keyValue)
-            if (!in_array($keyValue,$keyValues))
-              $keyValues[]=$keyValue;
+            if (!in_array($keyValue, $keyValues))
+              $keyValues[] = $keyValue;
       }
     }
     return $keyValues;
@@ -1396,20 +1395,28 @@ class LSldapObject extends LSlog_staticLoggerClass {
    *
    * @retval Array of $objectType Les objets en relations
    **/
-  public function listObjectsInRelation($object,$attr,$objectType,$attrValues='dn') {
+  public function listObjectsInRelation($object, $attr, $objectType, $attrValues='dn') {
     if ((!$attr)||(!$objectType)) {
       LSerror :: addErrorCode('LSrelation_05','listObjectsInRelation');
       return;
     }
-    if (!is_array($attrValues)) $attrValues=array($attrValues);
-    $keyValues=self :: getObjectKeyValueInRelation($object,$objectType,$attrValues);
+    $keyValues = self :: getObjectKeyValueInRelation($object, $objectType, $attrValues);
     if (!empty($keyValues)) {
-      $keyValuesFilters=array();
+      $keyValuesFilters = array();
       foreach($keyValues as $keyValue) {
         $keyValuesFilters[] = Net_LDAP2_Filter::create($attr,'equals',$keyValue);
       }
       $filter = LSldap::combineFilters('or', $keyValuesFilters);
-      return $this -> listObjects($filter,LSsession :: getRootDn(),array('scope' => 'sub','recursive' => true,'withoutCache'=>true, 'onlyAccessible' => false));
+      return $this -> listObjects(
+        $filter,
+        LSsession :: getRootDn(),
+        array(
+          'scope' => 'sub',
+          'recursive' => true,
+          'withoutCache'=>true,
+          'onlyAccessible' => false
+        )
+      );
     }
 
     return array();
@@ -1511,17 +1518,13 @@ class LSldapObject extends LSlog_staticLoggerClass {
         return;
       }
       if ($this -> attrs[$attr] instanceof LSattribute) {
-        if (!is_array($attrValues)) $attrValues=array($attrValue);
-        $keyValues=self :: getObjectKeyValueInRelation($object,$objectType,$attrValues);
-        $values = $this -> attrs[$attr] -> getValue();
-        if ((!is_array($values)) && (!empty($values))) {
-          $values = array($values);
-        }
-        if (is_array($values)) {
-          $updateData=array();
+        $keyValues = self :: getObjectKeyValueInRelation($object, $objectType, $attrValues);
+        $values = ensureIsArray($this -> attrs[$attr] -> getValue());
+        if ($values) {
+          $updateData = array();
           foreach($values as $value) {
-            if (!in_array($value,$keyValues)) {
-              $updateData[]=$value;
+            if (!in_array($value, $keyValues)) {
+              $updateData[] = $value;
             }
           }
           return $this -> _updateData(array($attr => $updateData));
@@ -1545,40 +1548,36 @@ class LSldapObject extends LSlog_staticLoggerClass {
   *
   * @retval boolean True en cas de succès, False sinon
   */
-  public function renameOneObjectInRelation($object,$oldValues,$attr,$objectType,$attrValue='dn') {
+  public function renameOneObjectInRelation($object, $oldValues, $attr, $objectType, $attrValue='dn') {
     if ((!$attr)||(!$objectType)) {
       LSerror :: addErrorCode('LSrelation_05','renameOneObjectInRelation');
       return;
     }
-    if (!is_array($oldValues)) $oldValues=array($oldValues);
-    if ($object instanceof $objectType) {
-      if ($this -> attrs[$attr] instanceof LSattribute) {
-        $values = $this -> attrs[$attr] -> getValue();
-        if ((!is_array($values)) && (!empty($values))) {
-          $values = array($values);
+    if (!($object instanceof $objectType))
+      return;
+    if (!($this -> attrs[$attr] instanceof LSattribute))
+      return;
+    $values = ensureIsArray($this -> attrs[$attr] -> getValue());
+    if (!$values)
+      return;
+    $updateData = array();
+    $oldValues = ensureIsArray($oldValues);
+    foreach($values as $value) {
+      if (!in_array($value, $oldValues)) {
+        $updateData[] = $value;
+      }
+      else {
+        if ($attrValue == 'dn') {
+          $val = $object -> getDn();
         }
-        if (is_array($values)) {
-          $updateData=array();
-          foreach($values as $value) {
-            if (!in_array($value,$oldValues)) {
-              $updateData[] = $value;
-            }
-            else {
-              if ($attrValue=='dn') {
-                $val = $object -> getDn();
-              }
-              else {
-                $val = $object -> getValue($attrValue);
-                $val = $val[0];
-              }
-              $updateData[] = $val;
-            }
-          }
-          return $this -> _updateData(array($attr => $updateData));
+        else {
+          $val = $object -> getValue($attrValue);
+          $val = $val[0];
         }
+        $updateData[] = $val;
       }
     }
-    return;
+    return $this -> _updateData(array($attr => $updateData));
   }
 
   /**
@@ -1606,29 +1605,28 @@ class LSldapObject extends LSlog_staticLoggerClass {
       LSerror :: addErrorCode('LSrelation_05','updateObjectsInRelation');
       return;
     }
-    if (!is_array($attrValues)) $attrValues=array($attrValue);
-    $currentDns=array();
-    $currentObjects = $this -> listObjectsInRelation($object,$attr,$objectType,$attrValues);
-    if(is_array($currentObjects)) {
-      for ($i=0;$i<count($currentObjects);$i++) {
-        $currentDns[]=$currentObjects[$i] -> getDn();
-      }
+    $currentDns = array();
+    $currentObjects = $this -> listObjectsInRelation($object, $attr, $objectType, $attrValues);
+    if(!is_array($currentObjects))
+      return;
+    for ($i=0; $i<count($currentObjects); $i++) {
+      $currentDns[] = $currentObjects[$i] -> getDn();
     }
-    $dontTouch=array_intersect($listDns,$currentDns);
+    $dontTouch = array_intersect($listDns, $currentDns);
 
-    for($i=0;$i<count($currentObjects);$i++) {
-      if (in_array($currentObjects[$i] -> getDn(),$dontTouch)) continue;
-      if (!$currentObjects[$i] -> deleteOneObjectInRelation($object,$attr,$objectType,$attrValue,$canEditFunction,$attrValues)) {
+    for($i=0; $i<count($currentObjects); $i++) {
+      if (in_array($currentObjects[$i] -> getDn(), $dontTouch)) continue;
+      if (!$currentObjects[$i] -> deleteOneObjectInRelation($object, $attr, $objectType, $attrValue, $canEditFunction, $attrValues)) {
         return;
       }
     }
 
-    $type=$this -> getType();
+    $type = $this -> getType();
     foreach($listDns as $dn) {
-      if (in_array($dn,$dontTouch)) continue;
+      if (in_array($dn, $dontTouch)) continue;
       $obj = new $type();
       if ($obj -> loadData($dn)) {
-        if (!$obj -> addOneObjectInRelation($object,$attr,$objectType,$attrValue,$canEditFunction)) {
+        if (!$obj -> addOneObjectInRelation($object, $attr, $objectType, $attrValue, $canEditFunction)) {
           return;
         }
       }
@@ -1863,7 +1861,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
    * @retval mixed Array of valid IOformats of this object type
    **/
   public function listValidIOformats() {
-    $ret=array();
+    $ret = array();
     $ioFormats = $this -> getConfig('ioFormat');
     if (is_array($ioFormats)) {
       foreach($ioFormats as $name => $conf) {
@@ -2109,7 +2107,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
     if (empty($values)) {
       return $return." empty\n";
     }
-    if (!is_array($values)) $values = array($values);
+    $values = ensureIsArray($values);
 
     // Truncate values if too long
     for ($i=0; $i < count($values); $i++)
diff --git a/src/includes/class/class.LSrelation.php b/src/includes/class/class.LSrelation.php
index d8243268..bd9e6dbb 100644
--- a/src/includes/class/class.LSrelation.php
+++ b/src/includes/class/class.LSrelation.php
@@ -112,7 +112,7 @@ class LSrelation extends LSlog_staticLoggerClass {
       case 'canEdit_attribute':
         return $this -> getConfig($key);
       case 'linkAttributeValues':
-        $linkAttributeValues = (is_array($this -> linkAttributeOtherValues)?$this -> linkAttributeOtherValues:array());
+        $linkAttributeValues = ensureIsArray($this -> linkAttributeOtherValues);
         if ($this -> linkAttributeValue)
           $linkAttributeValues[] = $this -> linkAttributeValue;
         return $linkAttributeValues;
@@ -761,9 +761,7 @@ class LSrelation extends LSlog_staticLoggerClass {
 
     // Check additional required parameters
     if ($additional_required_parameters) {
-      if (!is_array($additional_required_parameters))
-        $additional_required_parameters = array($additional_required_parameters);
-      foreach($additional_required_parameters as $p) {
+      foreach(ensureIsArray($additional_required_parameters) as $p) {
         if (!isset($_REQUEST[$p])) {
           self :: log_warning("Parameter '$p' is missing.");
           LSerror :: addErrorCode('LSsession_12');