How to implement callback methods inside classes (PHP)

Question

I need to use a class callback method on an array inside another method (the callback function belongs to the class).

class Database {

      public function escape_string_for_db($string){
             return mysql_real_escape_string($string);
      }

      public function escape_all_array($array){
             return array_map($array,"$this->escape_string_for_db");
      }
}

Is this the right way to go about that? (I mean, in terms of the second parameter passed to array_map)

Answer 1

I don't think you want to array_filter, but array_map

return array_map(array($this, 'escape_string_for_db'), $array);

but then again, you can just as well do

return array_map('mysql_real_escape_string', $array);