פליטת נתונים לAPI

function echoYemot($mode, $a, $b = false) {

    $return = '';

    switch($mode) {
        case 'say':
            $return = "id_list_message=" . $a;
            break;
        case 'saygo':
            $return = "id_list_message=" . $a . "&go_to_folder=/" . $b;
            break;
        case 'go':
            $return = "go_to_folder=/" . $a;
            break;
        case 'read':
            if ($b == '')   $b = "id,,1,1,4,No";
            $return = "read=" . $a . "=". $b;
            break;
    }
    echo $return;
    exit;
}