}
$pattern="";
-if (isset($_GET['pattern'])) { $pattern=$_GET['pattern']; }
-if (isset($_POST['pattern'])) { $pattern=$_POST['pattern']; }
+if (get_array($_GET, 'pattern')) { $pattern=$_GET['pattern']; }
+if (get_array($_POST, 'pattern')) { $pattern=$_POST['pattern']; }
$tokens=explode(" ",$pattern);
function token_filter ($t) { $t = trim($t); if (empty($t)) return false; return true; }