test selection modal

<?php
 $test = $_POST['url'];
 global $_TXTBODY;
 switch ($test) {
    case "url1":
        $_TXTBODY = "url1 ca marche tititit";
        break;
    case "url2":
        $_TXTBODY = "url2 ca marche tarlattaaa";
        break;
    case "url3":
        $_TXTBODY = "url3 ca marche torlototo";
        break;
    default:
    echo " nexiste pas";

    }
    include ("modal2.php");

?>