diff --git a/.gitignore b/.gitignore
index 3e610631..be74bb0a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ upgrade.log
 *~
 vendor
 /src/local.*
+tests-report.xml
diff --git a/src/includes/class/class.LSform.php b/src/includes/class/class.LSform.php
index f2ff5041..1580492d 100644
--- a/src/includes/class/class.LSform.php
+++ b/src/includes/class/class.LSform.php
@@ -549,7 +549,7 @@ class LSform extends LSlog_staticLoggerClass {
    *
    * @retval LSformElement
    */
-  public function addElement($type,$name,$label,$params=array(),&$attr_html) {
+  public function addElement($type,$name,$label,$params,&$attr_html) {
     $elementType='LSformElement_'.$type;
     LSsession :: loadLSclass($elementType);
     if (!class_exists($elementType)) {
diff --git a/src/includes/class/class.LSformElement.php b/src/includes/class/class.LSformElement.php
index 6f89afc3..a1b3eced 100644
--- a/src/includes/class/class.LSformElement.php
+++ b/src/includes/class/class.LSformElement.php
@@ -365,7 +365,7 @@ class LSformElement extends LSlog_staticLoggerClass {
    *
    * @retval boolean True on success, False otherwise
    */
-  protected function split_autocomplete_attr_values($attr_value="", $multiple_value_delimiter="|", &$attr_values, &$last_attr_value) {
+  protected function split_autocomplete_attr_values($attr_value, $multiple_value_delimiter, &$attr_values, &$last_attr_value) {
     $attr_values = explode($multiple_value_delimiter, $attr_value);
     if (count($attr_values) > 1 && !$this -> getParam('multiple', false, 'bool')) {
       self :: log_error("The attribute ".$this -> name." is not multivalued.");
diff --git a/src/includes/class/class.LSformRule.php b/src/includes/class/class.LSformRule.php
index 24420e34..236f1577 100644
--- a/src/includes/class/class.LSformRule.php
+++ b/src/includes/class/class.LSformRule.php
@@ -50,7 +50,7 @@ class LSformRule extends LSlog_staticLoggerClass {
   *
   * @return boolean True if value is valid, False otherwise
   */
-  public static function validate_values($rule_name, $values, $options=array(), &$formElement) {
+  public static function validate_values($rule_name, $values, $options, &$formElement) {
     // Compute PHP class name of the rule
     $rule_class = "LSformRule_".$rule_name;
 
@@ -93,7 +93,7 @@ class LSformRule extends LSlog_staticLoggerClass {
   *
   * @return boolean True if value is valid, False otherwise
   */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     return false;
   }
 
diff --git a/src/includes/class/class.LSformRule_LSformElement_select_validValue.php b/src/includes/class/class.LSformRule_LSformElement_select_validValue.php
index feb661c7..ab6e24de 100644
--- a/src/includes/class/class.LSformRule_LSformElement_select_validValue.php
+++ b/src/includes/class/class.LSformRule_LSformElement_select_validValue.php
@@ -36,7 +36,7 @@ class LSformRule_LSformElement_select_validValue extends LSformRule {
    *
    * @return boolean true if the value is valide, false if not
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $ret = $formElement -> isValidValue($value);
     if ($ret===False) return False;
     return True;
diff --git a/src/includes/class/class.LSformRule_alphanumeric.php b/src/includes/class/class.LSformRule_alphanumeric.php
index aaacc875..2cfa9a0e 100644
--- a/src/includes/class/class.LSformRule_alphanumeric.php
+++ b/src/includes/class/class.LSformRule_alphanumeric.php
@@ -42,7 +42,7 @@ class LSformRule_alphanumeric extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
 
      if (LSconfig :: get('params.withAccents', false, 'bool', $options)) {
          $regex = '/(*UTF8)^[0-9\p{L}]+$/';
diff --git a/src/includes/class/class.LSformRule_callable.php b/src/includes/class/class.LSformRule_callable.php
index c1444a87..af242d85 100644
--- a/src/includes/class/class.LSformRule_callable.php
+++ b/src/includes/class/class.LSformRule_callable.php
@@ -46,7 +46,7 @@ class LSformRule_callable extends LSformRule {
    *
    * @return boolean true if the value is valid, false otherwise
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $callable = LSconfig :: get('params.callable', null, null, $options);
     if (is_callable($callable))
       return call_user_func_array(
diff --git a/src/includes/class/class.LSformRule_compare.php b/src/includes/class/class.LSformRule_compare.php
index 873ad7e6..03a56ae7 100644
--- a/src/includes/class/class.LSformRule_compare.php
+++ b/src/includes/class/class.LSformRule_compare.php
@@ -35,34 +35,39 @@ class LSformRule_compare extends LSformRule {
   );
 
   // Operators mapping
-  static protected $_operators = array(
-      'eq'  => '==',
-      'neq' => '!=',
-      'gt'  => '>',
-      'gte' => '>=',
-      'lt'  => '<',
-      'lte' => '<='
+  static protected $_operators_aliases = array(
+      '=='  => 'eq',
+      '!='  => 'neq',
+      '>'  => 'gt',
+      '>='  => 'gte',
+      '<'  => 'lt',
+      '<='  => 'lte',
+  );
+  static protected $_operators_to_compare_function = array(
+      'eq'  => function($a, $b) {return floatval($a) == floatval($b);},
+      'neq' => function($a, $b) {return floatval($a) != floatval($b);},
+      'gt'  => function($a, $b) {return $a > $b;},
+      'gte' => function($a, $b) {return $a >= $b;},
+      'lt'  => function($a, $b) {return $a < $b;},
+      'lte' => function($a, $b) {return $a <= $b;},
   );
 
   /**
-   * Retourne l'operateur de comparaison.
+   * Return the compare function associated with the specified operator
    *
    * @access private
-   * @param  string  Nom de l'operateur
+   * @param  string  The operator name
    *
-   * @return string  Operateur à utiliser
+   * @return function  The compare function
    */
-  private static function _findOperator($operator_name) {
-
-    if (empty(self :: $operator_name)) {
-      return '==';
-    } elseif (isset(self :: $_operators[$operator_name])) {
-      return self :: $_operators[$operator_name];
-    } elseif (in_array($operator_name, self :: $_operators)) {
-      return $operator_name;
-    } else {
-      return '==';
-    }
+  private static function _findOperatorCompareFunction($operator_name) {
+    if (empty($operator_name))
+      $operator_name = 'eq';
+    elseif (isset(self :: $_operators_aliases[$operator_name]))
+      $operator_name = self :: $_operators_aliases[$operator_name];
+    elseif (!isset(self :: $_operators_to_compare_function[$operator_name]))
+      $operator_name = 'eq';
+    return self :: $_operators_to_compare_function[$operator_name];
   }
 
   /**
@@ -75,19 +80,13 @@ class LSformRule_compare extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($values, $options=array(), &$formElement) {
+  public static function validate($values, $options, &$formElement) {
     $operator = LSconfig :: get('params.operator', null, 'string', $options);
     if (!$operator) {
       LSerror :: addErrorCode('LSformRule_01',array('type' => 'compare', 'param' => 'operator'));
       return;
     }
-    $operator = self :: _findOperator($operator);
-    if ('==' != $operator && '!=' != $operator) {
-      $compareFn = create_function('$a, $b', 'return floatval($a) ' . $operator . ' floatval($b);');
-    }
-    else {
-      $compareFn = create_function('$a, $b', 'return $a ' . $operator . ' $b;');
-    }
+    $compareFn = self :: _findOperatorCompareFunction($operator);
     return $compareFn($values[0], $values[1]);
   }
 
diff --git a/src/includes/class/class.LSformRule_date.php b/src/includes/class/class.LSformRule_date.php
index e04a51d3..55043632 100644
--- a/src/includes/class/class.LSformRule_date.php
+++ b/src/includes/class/class.LSformRule_date.php
@@ -44,7 +44,7 @@ class LSformRule_date extends LSformRule {
   *
   * @return boolean True si les données sont valide, False sinon.
   */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $special_values = LSconfig :: get('params.special_values', array(), null, $options);
     if (in_array($value, $special_values))
       return true;
diff --git a/src/includes/class/class.LSformRule_differentPassword.php b/src/includes/class/class.LSformRule_differentPassword.php
index 6cab20fe..614cd2a3 100644
--- a/src/includes/class/class.LSformRule_differentPassword.php
+++ b/src/includes/class/class.LSformRule_differentPassword.php
@@ -42,7 +42,7 @@ class LSformRule_differentPassword extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $otherPasswordAttributes = LSconfig :: get('params.otherPasswordAttributes', null, null, $options);
     if (!is_null($otherPasswordAttributes)) {
       // Load LSattr_ldap_password
diff --git a/src/includes/class/class.LSformRule_email.php b/src/includes/class/class.LSformRule_email.php
index 429ef7e1..6151b85d 100644
--- a/src/includes/class/class.LSformRule_email.php
+++ b/src/includes/class/class.LSformRule_email.php
@@ -43,7 +43,7 @@ class LSformRule_email extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     return checkEmail(
       $value,
       LSconfig :: get('params.domain', null, null, $options),
diff --git a/src/includes/class/class.LSformRule_filesize.php b/src/includes/class/class.LSformRule_filesize.php
index 15891e78..330f38ed 100644
--- a/src/includes/class/class.LSformRule_filesize.php
+++ b/src/includes/class/class.LSformRule_filesize.php
@@ -44,7 +44,7 @@ class LSformRule_filesize extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     // According to PHP doc, strlen() returns the number of bytes rather
     // than the number of characters in a string.
     // See: https://www.php.net/manual/en/function.strlen.php
diff --git a/src/includes/class/class.LSformRule_imagefile.php b/src/includes/class/class.LSformRule_imagefile.php
index 4f4ff439..63c8679b 100644
--- a/src/includes/class/class.LSformRule_imagefile.php
+++ b/src/includes/class/class.LSformRule_imagefile.php
@@ -40,7 +40,7 @@ class LSformRule_imagefile extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $file = LSsession :: getTmpFile($value);
 
     $mimetype = mime_content_type($file);
diff --git a/src/includes/class/class.LSformRule_imagesize.php b/src/includes/class/class.LSformRule_imagesize.php
index 151c6751..314684dd 100644
--- a/src/includes/class/class.LSformRule_imagesize.php
+++ b/src/includes/class/class.LSformRule_imagesize.php
@@ -48,7 +48,7 @@ class LSformRule_imagesize extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $file = LSsession :: getTmpFile($value);
     list($width, $height, $type, $attr) = getimagesize($file);
     self :: log_debug("validate(): image size is $width x $height, type=$type, attr='$attr'");
diff --git a/src/includes/class/class.LSformRule_inarray.php b/src/includes/class/class.LSformRule_inarray.php
index a5cad5d6..e7047766 100644
--- a/src/includes/class/class.LSformRule_inarray.php
+++ b/src/includes/class/class.LSformRule_inarray.php
@@ -45,7 +45,7 @@ class LSformRule_inarray extends LSformRule {
    *
    * @return boolean true if the value is valid, false otherwise
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $possible_values = LSconfig :: get('params.possible_values', null, null, $options);
     $reverse = LSconfig :: get('params.reverse', false, 'bool', $options);
     if (!is_array($possible_values)) {
diff --git a/src/includes/class/class.LSformRule_integer.php b/src/includes/class/class.LSformRule_integer.php
index 50df9087..e33cdf07 100644
--- a/src/includes/class/class.LSformRule_integer.php
+++ b/src/includes/class/class.LSformRule_integer.php
@@ -48,7 +48,7 @@ class LSformRule_integer extends LSformRule{
    *
    * @return boolean true if the value is valided, false otherwise
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $max = LSconfig :: get('params.max', null, 'int', $options);
     if(is_int($max) && $max != 0 && $value > $max) {
       self :: log_debug("value is too higth ($value > $max)");
diff --git a/src/includes/class/class.LSformRule_ldapSearchURI.php b/src/includes/class/class.LSformRule_ldapSearchURI.php
index 7093fca5..70de9bee 100644
--- a/src/includes/class/class.LSformRule_ldapSearchURI.php
+++ b/src/includes/class/class.LSformRule_ldapSearchURI.php
@@ -46,7 +46,7 @@ class LSformRule_ldapSearchURI extends LSformRule {
    *
    * @return boolean true if the value is valid, false otherwise
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     self :: log_trace("validate($value): options = ".varDump($options));
     $uri_parts = explode('?', $value);
 
diff --git a/src/includes/class/class.LSformRule_lettersonly.php b/src/includes/class/class.LSformRule_lettersonly.php
index 6866b8ce..c850eb6f 100644
--- a/src/includes/class/class.LSformRule_lettersonly.php
+++ b/src/includes/class/class.LSformRule_lettersonly.php
@@ -36,7 +36,7 @@ class LSformRule_lettersonly extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $regex = '/^[a-zA-Z]+$/';
     LSsession :: loadLSclass('LSformRule_regex');
     return LSformRule_regex :: validate($value,$regex,$formElement);
diff --git a/src/includes/class/class.LSformRule_maxlength.php b/src/includes/class/class.LSformRule_maxlength.php
index f1dec569..3b8aa818 100644
--- a/src/includes/class/class.LSformRule_maxlength.php
+++ b/src/includes/class/class.LSformRule_maxlength.php
@@ -42,7 +42,7 @@ class LSformRule_maxlength extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $limit = LSconfig :: get('params.limit', null, 'int', $options);
     if(is_null($limit)) {
       LSerror :: addErrorCode('LSformRule_01',array('type' => 'maxlength', 'param' => 'limit'));
diff --git a/src/includes/class/class.LSformRule_mimetype.php b/src/includes/class/class.LSformRule_mimetype.php
index e109a087..c7aebeed 100644
--- a/src/includes/class/class.LSformRule_mimetype.php
+++ b/src/includes/class/class.LSformRule_mimetype.php
@@ -44,7 +44,7 @@ class LSformRule_mimetype extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $file = LSsession :: getTmpFile($value);
     $real_mimetype = mime_content_type($file);
 
diff --git a/src/includes/class/class.LSformRule_minlength.php b/src/includes/class/class.LSformRule_minlength.php
index c01e44b3..92470e98 100644
--- a/src/includes/class/class.LSformRule_minlength.php
+++ b/src/includes/class/class.LSformRule_minlength.php
@@ -42,7 +42,7 @@ class LSformRule_minlength extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $limit = LSconfig :: get('params.limit', null, 'int', $options);
     if(is_null($limit)) {
       LSerror :: addErrorCode('LSformRule_01',array('type' => 'minlength', 'param' => 'limit'));
diff --git a/src/includes/class/class.LSformRule_nonzero.php b/src/includes/class/class.LSformRule_nonzero.php
index 47594fe1..e119a5ea 100644
--- a/src/includes/class/class.LSformRule_nonzero.php
+++ b/src/includes/class/class.LSformRule_nonzero.php
@@ -36,7 +36,7 @@ class LSformRule_nonzero extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $regex = '/^-?[1-9][0-9]*/';
     LSsession :: loadLSclass('LSformRule_regex');
     return LSformRule_regex :: validate($value,$regex,$formElement);
diff --git a/src/includes/class/class.LSformRule_nopunctuation.php b/src/includes/class/class.LSformRule_nopunctuation.php
index 4ffdfa7c..5f5837b2 100644
--- a/src/includes/class/class.LSformRule_nopunctuation.php
+++ b/src/includes/class/class.LSformRule_nopunctuation.php
@@ -36,7 +36,7 @@ class LSformRule_nopunctuation extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $regex = '/^[^().\/\*\^\?#!@$%+=,\"\'><~\[\]{}]+$/';
     LSsession :: loadLSclass('LSformRule_regex');
     return LSformRule_regex :: validate($value,$regex,$formElement);
diff --git a/src/includes/class/class.LSformRule_numberOfValues.php b/src/includes/class/class.LSformRule_numberOfValues.php
index e7272058..a4bc24cc 100644
--- a/src/includes/class/class.LSformRule_numberOfValues.php
+++ b/src/includes/class/class.LSformRule_numberOfValues.php
@@ -45,7 +45,7 @@ class LSformRule_numberOfValues extends LSformRule {
    *
    * @return boolean true if the value is valide, false if not
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $max_values = LSconfig :: get('params.max', null, 'int', $options);
     $min_values = LSconfig :: get('params.min', null, 'int', $options);
     if(is_null($max_values) && is_null($min_values)) {
diff --git a/src/includes/class/class.LSformRule_numeric.php b/src/includes/class/class.LSformRule_numeric.php
index a838d4d2..9c7249d2 100644
--- a/src/includes/class/class.LSformRule_numeric.php
+++ b/src/includes/class/class.LSformRule_numeric.php
@@ -36,7 +36,7 @@ class LSformRule_numeric extends LSformRule{
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $regex = '/(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/';
     LSsession :: loadLSclass('LSformRule_regex');
     return LSformRule_regex :: validate($value,$regex,$formElement);
diff --git a/src/includes/class/class.LSformRule_password.php b/src/includes/class/class.LSformRule_password.php
index 2116cc88..25cbcce8 100644
--- a/src/includes/class/class.LSformRule_password.php
+++ b/src/includes/class/class.LSformRule_password.php
@@ -52,7 +52,7 @@ class LSformRule_password extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $errors = array();
 
     $maxLength = LSconfig :: get('params.maxLength', null, 'int', $options);
diff --git a/src/includes/class/class.LSformRule_rangelength.php b/src/includes/class/class.LSformRule_rangelength.php
index 92792d3e..0e770d71 100644
--- a/src/includes/class/class.LSformRule_rangelength.php
+++ b/src/includes/class/class.LSformRule_rangelength.php
@@ -43,7 +43,7 @@ class LSformRule_rangelength extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $limits = LSconfig :: get('params.limits', null, null, $options);
     if(!is_array($limits) || count($limits) != 2) {
       LSerror :: addErrorCode('LSformRule_01',array('type' => 'rangelength', 'param' => 'limits'));
diff --git a/src/includes/class/class.LSformRule_regex.php b/src/includes/class/class.LSformRule_regex.php
index f38172ed..2be18264 100644
--- a/src/includes/class/class.LSformRule_regex.php
+++ b/src/includes/class/class.LSformRule_regex.php
@@ -42,7 +42,7 @@ class LSformRule_regex extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     if (is_array($options)) {
       $regex = LSconfig :: get('params.regex', null, 'string', $options);
       if (!is_string($regex)) {
diff --git a/src/includes/class/class.LSformRule_required.php b/src/includes/class/class.LSformRule_required.php
index bb093a0a..39317971 100644
--- a/src/includes/class/class.LSformRule_required.php
+++ b/src/includes/class/class.LSformRule_required.php
@@ -36,7 +36,7 @@ class LSformRule_required extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     return ((string)$value != '');
   }
 
diff --git a/src/includes/class/class.LSformRule_ssh_pub_key.php b/src/includes/class/class.LSformRule_ssh_pub_key.php
index 36dbfb1c..98038ee0 100644
--- a/src/includes/class/class.LSformRule_ssh_pub_key.php
+++ b/src/includes/class/class.LSformRule_ssh_pub_key.php
@@ -36,7 +36,7 @@ class LSformRule_ssh_pub_key extends LSformRule {
    *
    * @return boolean true if the value is valide, false if not
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     if (preg_match('/^(ssh-[a-z0-9]+) +([^ ]+) +(.*)$/', $value, $m)) {
       $data=@base64_decode($m[2]);
       if (is_string($data))
diff --git a/src/includes/class/class.LSformRule_telephonenumber.php b/src/includes/class/class.LSformRule_telephonenumber.php
index 78c8e5a7..4d5853b2 100644
--- a/src/includes/class/class.LSformRule_telephonenumber.php
+++ b/src/includes/class/class.LSformRule_telephonenumber.php
@@ -36,7 +36,7 @@ class LSformRule_telephonenumber extends LSformRule {
    *
    * @return boolean true si la valeur est valide, false sinon
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $regex = '/^(01|02|03|04|05|06|08|09)[0-9]{8}$/';
     LSsession :: loadLSclass('LSformRule_regex');
     return LSformRule_regex :: validate($value,$regex,$formElement);
diff --git a/src/includes/class/class.LSformRule_zxcvbn.php b/src/includes/class/class.LSformRule_zxcvbn.php
index 0555c818..2bb292de 100644
--- a/src/includes/class/class.LSformRule_zxcvbn.php
+++ b/src/includes/class/class.LSformRule_zxcvbn.php
@@ -54,7 +54,7 @@ class LSformRule_zxcvbn extends LSformRule {
    *
    * @return boolean True if value is valid, False otherwise
    */
-  public static function validate($value, $options=array(), &$formElement) {
+  public static function validate($value, $options, &$formElement) {
     $zxcvbn = new Zxcvbn();
     $userData = array();
     $userDataAttrs = LSconfig :: get('params.userDataAttrs', array(), 'array', $options);