Online PHP editor | output for fZYjZ

<?php function deleteActivity() { $response = array(); if (isset($_POST["aid"])) { $aid = intval($_POST["aid"]); $query = "DELETE FROM Activities WHERE ActivityID = '$aid';"; $result = mysql_query($query) or die(mysql_error()); if ($result) { $response["error"] = false; $response["message"] = "Activity deleted successfully!"; } else { $response["error"] = true; $response["message"] = "Failed to deleted activity!"; } } else { $response["error"] = true; $response["message"] = "Things are missing!"; } // echo json response echo json_encode($response); } ?>