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        function escape_array($ar)
        {
                if (is_array ( $ar ))
                {
                        foreach ( $ar as $key => $ar_sub )
                        {
                                $ar [$key] = $this->escape_array ( $ar_sub );
                        }
                }
                else if (is_string ( $ar ))
                {
                        $ar = @mysql_escape_string ( $ar );
                }
                return $ar;
        }