/**
* @param $array1
* @param $array2
- * @param bool $negate if Negate is true only if values are equal are returned.
- * @param$$statistics mixed array
+ * @param bool $negate if Negate is true only if values are equal are returned.
+ * @param $statistics mixed array
* @return array
*/
public function arrayDiff($array1, $array2, $negate = false, &$statistics)