$sql = mysqli_query($link, "DELETE FROM `users` WHERE `ID` = '".mysqli_real_escape_string($link, $_GET['del_id'])."'");$stmt = mysqli_prepare($link, "DELETE FROM `users` WHERE `ID` =?");
mysqli_stmt_bind_param($stmt, "s", $_GET['del_id']);
mysqli_stmt_execute($stmt);
mysqli_stmt_close($stmt);header("Location...");, вам НАДО после него делать exit();!require_once 'mysql_connect.php';
if(!empty($_GET['id']) && isset($_POST['username']) && isset($_POST['mess']))
{
$username = trim(filter_var($_POST['username'], FILTER_SANITIZE_STRING));
$mess = trim(filter_var($_POST['mess'], FILTER_SANITIZE_STRING));
if (!empty($username) && !empty($mess))
{
$sql = 'INSERT INTO comments(name, mess, article_id) VALUES(?, ?, ?)';
$query = $pdo->prepare($sql);
$query->execute([$username, $mess, $_GET['id']]);
}
header("Location: /news.php?id={$_GET['id']}");
exit();
}header("Location: ...").echo() (или аналогичное) ДО ВЫЗОВА функции header("Location: ...").