diff --git a/src/includes/class/class.LSattr_ldap.php b/src/includes/class/class.LSattr_ldap.php
index 59cbd055..11da7bea 100644
--- a/src/includes/class/class.LSattr_ldap.php
+++ b/src/includes/class/class.LSattr_ldap.php
@@ -70,7 +70,7 @@ class LSattr_ldap extends LSlog_staticLoggerClass {
    * @retval mixed La valeur traitée de l'attribut
    */
   public function getUpdateData($data) {
-    return $data;
+    return ensureIsArray($data);
   }
 
   /**
@@ -81,7 +81,7 @@ class LSattr_ldap extends LSlog_staticLoggerClass {
    * @retval mixed La valeur d'affichage de l'attribut
    */
   public function getDisplayValue($data) {
-    return $data;
+    return ensureIsArray($data);
   }
 
   /**
@@ -93,7 +93,7 @@ class LSattr_ldap extends LSlog_staticLoggerClass {
    * @retval boolean True uniquement si la valeur passer en paramètre différe de l'actuelle
    */
   public function isUpdated($data) {
-    $data=$this -> getUpdateData($data);
+    $data = $this -> getUpdateData($data);
     if ($this -> attribute -> data != $data) {
       return true;
     }
diff --git a/src/includes/class/class.LSattr_ldap_boolean.php b/src/includes/class/class.LSattr_ldap_boolean.php
index ec03d694..4de08d46 100644
--- a/src/includes/class/class.LSattr_ldap_boolean.php
+++ b/src/includes/class/class.LSattr_ldap_boolean.php
@@ -48,11 +48,14 @@ class LSattr_ldap_boolean extends LSattr_ldap {
    * @retval mixed Attribute data
    **/
   public function getUpdateData($data) {
-    if ($data[0]=='yes') {
-      return array($this -> getTrue());
-    }
-    if ($data[0]=='no') {
-      return array($this -> getFalse());
+    $data = ensureIsArray($data);
+    if ($data) {
+      if ($data[0] == 'yes') {
+        return array($this -> getTrue());
+      }
+      if ($data[0] == 'no') {
+        return array($this -> getFalse());
+      }
     }
     return array();
   }
@@ -65,13 +68,11 @@ class LSattr_ldap_boolean extends LSattr_ldap {
    * @retval boolean True or False
    **/
   public function isTrue($data) {
-    if (!is_array($data)) {
-      $data=array($data);
-    }
-    if ($data[0] == $this -> getTrue()) {
+    $data = ensureIsArray($data);
+    if ($data && $data[0] == $this -> getTrue()) {
       return true;
     }
-    return;
+    return false;
   }
 
   /**
@@ -82,13 +83,11 @@ class LSattr_ldap_boolean extends LSattr_ldap {
    * @retval boolean True or False
    **/
   public function isFalse($data) {
-    if (!is_array($data)) {
-      $data=array($data);
-    }
-    if ($data[0] == $this -> getFalse()) {
+    $data = ensureIsArray($data);
+    if ($data && $data[0] == $this -> getFalse()) {
       return true;
     }
-    return;
+    return false;
   }
 
   /**
diff --git a/src/includes/class/class.LSattr_ldap_compositeValueToJSON.php b/src/includes/class/class.LSattr_ldap_compositeValueToJSON.php
index 5bac32c3..1d8e19ba 100644
--- a/src/includes/class/class.LSattr_ldap_compositeValueToJSON.php
+++ b/src/includes/class/class.LSattr_ldap_compositeValueToJSON.php
@@ -37,15 +37,10 @@ class LSattr_ldap_compositeValueToJSON extends LSattr_ldap {
    * @retval mixed La valeur d'affichage de l'attribut
    */
   public function getDisplayValue($data) {
-    if ($data) {
-      if (!is_array($data))
-        $data = array($data);
-      $ret = array();
-      foreach($data as $key => $val)
-        $ret[$key] = json_encode(self :: parseValue($val));
-      return $ret;
-    }
-    return $data;
+    $ret = array();
+    foreach(ensureIsArray($data) as $key => $val)
+      $ret[$key] = json_encode(self :: parseValue($val));
+    return $ret;
   }
 
   /**
@@ -56,22 +51,17 @@ class LSattr_ldap_compositeValueToJSON extends LSattr_ldap {
    * @retval mixed La valeur traitée de l'attribut
    */
   public function getUpdateData($data) {
-    if ($data) {
-      if (!is_array($data))
-        $data = array($data);
-      $ret = array();
-      foreach($data as $key => $val)
-        $ret[$key] = self :: encodeValue(json_decode($val, true));
-      return $ret;
-    }
-    return $data;
+    $ret = array();
+    foreach(ensureIsArray($data) as $key => $val)
+      $ret[$key] = self :: encodeValue(json_decode($val, true));
+    return $ret;
   }
 
   public static function parseValue($value) {
-    if (preg_match_all('/\[([^=]*)=([^\]]*)\]/',$value,$matches)) {
-      $parseValue=array();
-      for($i=0;$i<count($matches[0]);$i++) {
-        $parseValue[$matches[1][$i]]=$matches[2][$i];
+    if (preg_match_all('/\[([^=]*)=([^\]]*)\]/', $value, $matches)) {
+      $parseValue = array();
+      for($i=0; $i<count($matches[0]); $i++) {
+        $parseValue[$matches[1][$i]] = $matches[2][$i];
       }
       return $parseValue;
     }
@@ -80,9 +70,9 @@ class LSattr_ldap_compositeValueToJSON extends LSattr_ldap {
 
   public static function encodeValue($value) {
     if (is_array($value)) {
-      $ret="";
+      $ret = "";
       foreach($value as $key => $val)
-        $ret.="[$key=$val]";
+        $ret .= "[$key=$val]";
       return $ret;
     }
     return False;
diff --git a/src/includes/class/class.LSattr_ldap_date.php b/src/includes/class/class.LSattr_ldap_date.php
index 9a818922..d7b19b59 100644
--- a/src/includes/class/class.LSattr_ldap_date.php
+++ b/src/includes/class/class.LSattr_ldap_date.php
@@ -34,9 +34,7 @@ class LSattr_ldap_date extends LSattr_ldap {
    * @retval mixed La valeur d'affichage de l'attribut
    */
   public function getDisplayValue($data) {
-    if(!is_array($data)) {
-      $data=array($data);
-    }
+    $data = ensureIsArray($data);
     if ($this -> getConfig('ldap_options.timestamp', false, 'bool')) {
       return $data;
     }
@@ -58,22 +56,21 @@ class LSattr_ldap_date extends LSattr_ldap {
    * @retval mixed La valeur traitée de l'attribut
    */
   public function getUpdateData($data) {
+    $data = ensureIsArray($data);
     if ($this -> getConfig('ldap_options.timestamp', false, 'bool')) {
       return $data;
     }
     $timezone = timezone_open($this -> getConfig('ldap_options.timezone', 'UTC', 'string'));
-    $retval=array();
-    if(is_array($data)) {
-      foreach($data as $val) {
-        $datetime = date_create("@$val");
-        $datetime -> setTimezone($timezone);
-        $datetime_string = $datetime -> format($this -> getFormat());
+    $retval = array();
+    foreach($data as $val) {
+      $datetime = date_create("@$val");
+      $datetime -> setTimezone($timezone);
+      $datetime_string = $datetime -> format($this -> getFormat());
 
-        // Replace +0000 or -0000 end by Z
-        $datetime_string = preg_replace('/[\+\-]0000$/', 'Z', $datetime_string);
+      // Replace +0000 or -0000 end by Z
+      $datetime_string = preg_replace('/[\+\-]0000$/', 'Z', $datetime_string);
 
-        $retval[] = $datetime_string;
-      }
+      $retval[] = $datetime_string;
     }
     return $retval;
   }
diff --git a/src/includes/class/class.LSattr_ldap_naiveDate.php b/src/includes/class/class.LSattr_ldap_naiveDate.php
index 1c25c6a3..a0b43033 100644
--- a/src/includes/class/class.LSattr_ldap_naiveDate.php
+++ b/src/includes/class/class.LSattr_ldap_naiveDate.php
@@ -38,11 +38,8 @@ class LSattr_ldap_naiveDate extends LSattr_ldap {
    * @retval mixed The display value ot the attribute
    */
   public function getDisplayValue($data) {
-    if(!is_array($data)) {
-      $data=array($data);
-    }
-    $retval=array();
-    foreach($data as $val) {
+    $retval = array();
+    foreach(ensureIsArray($data) as $val) {
       $date = strptime($val, self::FORMAT);
       if (is_array($date)) {
         $retval[] = mktime(
@@ -66,11 +63,9 @@ class LSattr_ldap_naiveDate extends LSattr_ldap {
    * @retval mixed The LDAP value of the attribute
    */
   public function getUpdateData($data) {
-    $retval=array();
-    if(is_array($data)) {
-      foreach($data as $val) {
-        $retval[] = strftime(self::FORMAT, $val).'Z';
-      }
+    $retval = array();
+    foreach(ensureIsArray($data) as $val) {
+      $retval[] = strftime(self::FORMAT, $val).'Z';
     }
     return $retval;
   }
diff --git a/src/includes/class/class.LSattr_ldap_password.php b/src/includes/class/class.LSattr_ldap_password.php
index 27706834..a7c9b8cc 100644
--- a/src/includes/class/class.LSattr_ldap_password.php
+++ b/src/includes/class/class.LSattr_ldap_password.php
@@ -37,25 +37,17 @@ class LSattr_ldap_password extends LSattr_ldap {
    */
   public function getDisplayValue($data) {
     if ($this -> getConfig('ldap_options.displayClearValue', false, 'bool')) {
-      if (is_array($data)) {
-        $ret=array();
-        $wildcardPassword = $this -> getConfig('ldap_options.wildcardPassword');
-        $encodedWildcardPassword = $this -> getConfig('ldap_options.encodedWildcardPassword');
-        foreach($data as $p) {
-          if ($p == $wildcardPassword || $p == $encodedWildcardPassword) {
-            continue;
-          }
-          $ret[]=$p;
-        }
-        return $ret;
-      }
-      else {
-        return $data;
+      $ret=array();
+      $wildcardPassword = $this -> getConfig('ldap_options.wildcardPassword');
+      $encodedWildcardPassword = $this -> getConfig('ldap_options.encodedWildcardPassword');
+      foreach(ensureIsArray($data) as $p) {
+        if ($p == $wildcardPassword || $p == $encodedWildcardPassword)
+          continue;
+        $ret[] = $p;
       }
+      return $ret;
     }
-    else {
-      return '********';
-    }
+    return array('********');
   }
 
   /**
@@ -69,36 +61,21 @@ class LSattr_ldap_password extends LSattr_ldap {
    * @retval mixed The value of this attribute to be stocked
    */
   public function getUpdateData($data) {
-    $this -> clearPassword = $data[0];
-    $data=array();
-
-    $data[]=$this -> encodePassword($this -> clearPassword);
+    $ret = array();
+    foreach(ensureIsArray($data) as $val) {
+      $this -> clearPassword = $val;
+      $ret[] = $this -> encodePassword($val);
+    }
 
     // Wildcard Password
-    $wildcardPassword = $this -> getConfig('ldap_options.wildcardPassword');
-    if ($wildcardPassword) {
-      if (!is_array($wildcardPassword)) {
-        $data[] = $this -> encodePassword($wildcardPassword);
-      }
-      else {
-        foreach($wildcardPassword as $pwd) {
-          $data[] = $this -> encodePassword($pwd);
-        }
-      }
-    }
+    foreach(ensureIsArray($this -> getConfig('ldap_options.wildcardPassword')) as $pwd)
+      $ret[] = $this -> encodePassword($pwd);
 
     // Wildcard Password already encoded
-    $encodedWildcardPassword = $this -> getConfig('ldap_options.encodedWildcardPassword');
-    if ($encodedWildcardPassword) {
-      if (!is_array($encodedWildcardPassword)) {
-        $data[] = $encodedWildcardPassword;
-      }
-      else {
-        $data = array_merge($data, $encodedWildcardPassword);
-      }
-    }
+    foreach(ensureIsArray($this -> getConfig('ldap_options.encodedWildcardPassword')) as $pwd)
+      $ret[] = $pwd;
 
-    return $data;
+    return $ret;
   }
 
   /**
diff --git a/src/includes/class/class.LSattr_ldap_postaladdress.php b/src/includes/class/class.LSattr_ldap_postaladdress.php
index 2d90409f..e063260d 100644
--- a/src/includes/class/class.LSattr_ldap_postaladdress.php
+++ b/src/includes/class/class.LSattr_ldap_postaladdress.php
@@ -34,7 +34,10 @@ class LSattr_ldap_postaladdress extends LSattr_ldap {
    * @retval mixed La valeur d'affichage de l'attribut
    */
   public function getDisplayValue($data) {
-    return str_replace("$","\n",$data);
+    $ret = array();
+    foreach(ensureIsArray($data) as $val)
+      $ret[] = str_replace("$", "\n", $val);
+    return $ret;
   }
 
   /**
@@ -45,7 +48,10 @@ class LSattr_ldap_postaladdress extends LSattr_ldap {
    * @retval mixed La valeur traitée de l'attribut
    */
   public function getUpdateData($data) {
-    return str_replace("\n","$",$data);
+    $ret = array();
+    foreach(ensureIsArray($data) as $val)
+      $ret[] = str_replace("\n", "$", $val);;
+    return $ret;
   }
 
 }
diff --git a/src/includes/class/class.LSattr_ldap_sambaAcctFlags.php b/src/includes/class/class.LSattr_ldap_sambaAcctFlags.php
index cde24f6a..4dc1c77a 100644
--- a/src/includes/class/class.LSattr_ldap_sambaAcctFlags.php
+++ b/src/includes/class/class.LSattr_ldap_sambaAcctFlags.php
@@ -61,9 +61,7 @@ class LSattr_ldap_sambaAcctFlags extends LSattr_ldap {
    * @retval array Array of enabled flags
    **/
   public static function parse_flags($data) {
-    if (!is_array($data)) {
-      $data = array($data);
-    }
+    $data = ensureIsArray($data);
     if (count($data) > 1) {
       LSerror :: addErrorCode('LSattr_ldap_sambaAcctFlags_01');
       return;
@@ -99,8 +97,7 @@ class LSattr_ldap_sambaAcctFlags extends LSattr_ldap {
    * @retval array Array of LDAP attribute value
    **/
   public static function format_flags($flags) {
-    if (!is_array($flags))
-      $flags = array($flags);
+    $flags = ensureIsArray($flags);
     foreach($flags as $flag) {
       if (!self :: check_flag($flag)) {
         LSerror :: addErrorCode('LSattr_ldap_sambaAcctFlags_03', $flag);
diff --git a/src/includes/class/class.LSattr_ldap_shadowExpire.php b/src/includes/class/class.LSattr_ldap_shadowExpire.php
index bc8333b2..fd3f91f9 100644
--- a/src/includes/class/class.LSattr_ldap_shadowExpire.php
+++ b/src/includes/class/class.LSattr_ldap_shadowExpire.php
@@ -36,10 +36,9 @@ class LSattr_ldap_shadowExpire extends LSattr_ldap {
    * @retval mixed Array of timestamp
    */
   public function getDisplayValue($data) {
-    $ret=array();
-    foreach($data as $val) {
-      $ret[]=((int)$val)*86400;
-    }
+    $ret = array();
+    foreach(ensureIsArray($data) as $val)
+      $ret[] = intval($val)*86400;
     return $ret;
   }
 
@@ -52,9 +51,8 @@ class LSattr_ldap_shadowExpire extends LSattr_ldap {
    */
   public function getUpdateData($data) {
     $ret=array();
-    foreach($data as $val) {
-      $ret[]=(string)round(((int)$val)/86400);
-    }
+    foreach(ensureIsArray($data) as $val)
+      $ret[] = strval(round(intval($val) / 86400));
     return $ret;
   }
 
diff --git a/src/includes/class/class.LSattribute.php b/src/includes/class/class.LSattribute.php
index 19812c93..2c917503 100644
--- a/src/includes/class/class.LSattribute.php
+++ b/src/includes/class/class.LSattribute.php
@@ -115,11 +115,7 @@ class LSattribute extends LSlog_staticLoggerClass {
    * @retval boolean true
    */
   public function loadData($attr_data) {
-    if (is_empty($attr_data) || $attr_data === false)
-      $attr_data = null;
-    elseif (!is_array($attr_data))
-      $attr_data = array($attr_data);
-    $this -> data = $attr_data;
+    $this -> data = ensureIsArray($attr_data);
     return true;
   }
 
@@ -131,12 +127,9 @@ class LSattribute extends LSlog_staticLoggerClass {
    * @retval boolean true
    */
   public function reloadData($attr_data) {
-    if ((!is_array($attr_data))&&(!empty($attr_data))) {
-      $attr_data = array($attr_data);
-    }
-    $this -> data = $attr_data;
-    $this -> updateData=false;
-    $this -> is_validate=false;
+    $this -> data = ensureIsArray($attr_data);
+    $this -> updateData = false;
+    $this -> is_validate = false;
     return true;
   }
 
@@ -392,14 +385,7 @@ class LSattribute extends LSlog_staticLoggerClass {
    * @retval string La valeur a afficher dans le formulaire.
    */
   public function getFormVal() {
-    $data=$this -> html -> getFormVal($this -> data);
-    if ($data==NULL) {
-      $data=array();
-    }
-    if(!is_array($data)) {
-      $data=array($data);
-    }
-    return $data;
+    return ensureIsArray($this -> html -> getFormVal($this -> data));
   }
 
   /**
@@ -413,7 +399,7 @@ class LSattribute extends LSlog_staticLoggerClass {
    */
   public function setUpdateData($data) {
     if($this -> ldap -> isUpdated($data)) {
-      $this -> updateData=$data;
+      $this -> updateData = ensureIsArray($data);
     }
   }
 
@@ -499,15 +485,7 @@ class LSattribute extends LSlog_staticLoggerClass {
       $value = $this -> ldapObject -> getFData($format);
     }
     if ($value !== false) {
-      if (!empty($value)) {
-        if (!is_array($value)) {
-          $value=array($value);
-        }
-        $this -> updateData=$value;
-      }
-      else {
-        $this -> updateData=array();
-      }
+      $this -> updateData = ensureIsArray($value);
       return true;
     }
     return;
diff --git a/src/includes/functions.php b/src/includes/functions.php
index 19bbfbf5..0205bdb1 100644
--- a/src/includes/functions.php
+++ b/src/includes/functions.php
@@ -782,3 +782,11 @@ function is_empty($val) {
   }
   return empty($val);
 }
+
+function ensureIsArray($value) {
+  if (is_array($value))
+    return $value;
+  if (is_empty($value))
+    return array();
+  return array($value);
+}