无法将值插入数据库，找不到错误

Question

if(isset($_POST['publish'])) {
$title = mysqli_real_escape_string($db, $_POST['title']);
$text = mysqli_real_escape_string($db, $_POST['text']);
$image = mysqli_real_escape_string($db, $_POST['image']);
$author = mysqli_real_escape_string($db, $_POST['author']);

$query = "INSERT INTO articles (title, text, image, author)VALUES ('$title', '$text', '$image', '$author')";
$result = mysqli_query($db, $query);
if(!$result){
    $msg = "ERROR Uploading data to DB!";
}else{
    $msg = "SUCCESS Uploaded data to DB!";
}
}

This is the db

您好，我在将值插入db时遇到问题，这是代码，有什么帮助吗？谢谢