我收到这个奇怪的错误,我不知道我做错了什么
跟这条线有关系:
$result = mysqli_query($connection,$query);
plex 帮我解决这个问题
这是我的代码:
`
define("HOSTNAME", "localhost");
define("USERNAME", "root");
define("PASSWORD", "");
define("DATABASE", "courses");
$connection = mysqli_connect(HOSTNAME,USERNAME,PASSWORD,DATABASE);
if(isset($_POST['add_data'])) {
$name = $_POST['name'];
$description = $_POST['description'];
$duration = $_POST['duration'];
$price = $_POST['price'];
if($name == "" || empty($name)) {
header('location:index.php?message= you need to fill in your name');
}
else {
$query = "insert into `courses` (`name,` `description`, `duration`, `price`) values
('$name', '$description', '$duration', '$price')";
$result = mysqli_query($connection,$query); ERROR line 25
if(!$result) {
die("query Failed".mysqli_error());
}
else {
header('location:index.php?insert_msg= your data has been added');
}
}
}
?>
` 我的索引页:
我正在尝试制作一个 crud 应用程序,但我无法插入任何数据