在向我的数据库提交信息后,我想刷新页面以显示这些更改,就像表单处理完毕一样.提交后页面“重新加载”但不反映更改,所以我假设我需要在按下提交时添加刷新命令,但它似乎太快了？
所以我添加了一个刷新时间,但即使把它调到50,我也得到了相同的结果.
如果我按两次按钮,则会刷新正确的信息.有一个更好的方法吗？
<?PHP
ini_set('display_errors',1);
error_reporting(E_ALL);
include_once '../includes/conn.PHP';
if(!$user->is_loggedin()){
$user->redirect('../users/login.PHP');
}
$id = $_SESSION['session'];
$stmt = $conn->prepare("SELECT * FROM users WHERE id=:id");
$stmt->execute(array(":id"=>$id));
$userRow=$stmt->fetch(PDO::FETCH_ASSOC);
$location = isset($_POST['location']) ? $_POST['location'] : '';
$about = isset($_POST['about']) ? $_POST['about'] : '';
$title = isset($_POST['title']) ? $_POST['title'] : '';
if($title!=''){
$sql = "UPDATE users SET title=:title WHERE id=:id";
$stmt = $conn->prepare($sql);
if($stmt == false){
$error = "User Title update Failed. Please try again.";
}
$result = $stmt->execute(array(":title"=>$title,":id"=>$id));
if($result == false) {
$error = "User Title update Failed. Please try again.";
}
$count = $stmt->rowCount();
}
if($location!=''){
$sql = "UPDATE users SET location=:location WHERE id=:id";
$stmt = $conn->prepare($sql);
if($stmt == false){
$error = "User Location update Failed. Please try again.";
}
$result = $stmt->execute(array(":location"=>$location,":id"=>$id));
if($result == false) {
$error = "User location update Failed. Please try again.";
}
$count = $stmt->rowCount();
}
if($about!=''){
$sql = "UPDATE users SET about=:about WHERE id=:id";
$stmt = $conn->prepare($sql);
if($stmt == false){
$error = "about Me update Failed. Please try again.";
}
$result = $stmt->execute(array(":about"=>$about,":id"=>$id));
if($result == false) {
$error = "about Me location update Failed. Please try again.";
}
$count = $stmt->rowCount();
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>EpicOwl UK | CMS Users Edit Profile</title>
<Meta charset="utf-8">
<link rel="shortcut icon" href="../images/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" type="text/css" href="../css/main.css">
</head>
<body>
<div id="header">
<a href="index.PHP"><img id="logo" src="../images/logo.png" /></a>
<div id="navigation">
<ul>
<a href="../index.PHP"><li>Home</li></a>
<a href="./profile.PHP"><li>My Profile</li></a>
<a href="../admin/index.PHP"><li>Admin Panel</li></a>
</ul>
</div>
</div>
<div id="content">
<form method="post"><br />
<h2>Edit Profile</h2>
<label><strong>User Title:</strong></label><br />
<input type="text" name="title" maxlength="50" placeholder="<?PHP echo ($userRow['title']); ?>" /><br /><br />
<label><strong>My Location:</strong></label><br />
<input type="text" name="location" maxlength="50" placeholder="<?PHP echo ($userRow['location']); ?>" /><br /><br />
<label><strong>About Me:</strong><label><br />
<textarea name="about" rows="13" cols="60" maxlength="255" placeholder="<?PHP echo ($userRow['about']); ?>"></textarea><br /><br />
<button type="submit" name="update">Update</button><br /><br /><br />
<?PHP
if(isset($_POST['submit'])){
header('refresh:20; Location: '.$_SERVER['REQUEST_URI']);
}
?>
</form>
</div>
<div id="footer">
<p class="copyright">© EpicOwl UK. All Rights Reserved.</p>
</div>
</body>
</html>
你做错了,你必须在显示HTML之前处理表单提交. PHP正在逐行执行,因此在您的情况下,您首先显示数据,然后检查表单是否已提交.只需将此代码移到PHP代码的其余部分所在的位置(您甚至可以删除refresh stuff命令)：
if(isset($_POST['submit'])){
header('Location: '.$_SERVER['REQUEST_URI']);
}
编辑：
当你混合使用HTML和PHP时,人们发明MVC是因为像你这样的情况,并且想知道为什么事情不起作用.将PHP代码保存在文件的顶部,尽量不要在HTML中的任何地方编写PHP代码,这样可以省去很多麻烦.此外,在调用header之后使用exit来进一步停止代码执行.这是您的代码的更新版本,简化和更“算法”(我希望您看到并理解代码流的方式)：
<?PHP
ini_set('display_errors',1);
error_reporting(E_ALL);
include_once '../includes/conn.PHP';
if(!$user->is_loggedin()){
$user->redirect('../users/login.PHP');
}
$id = $_SESSION['session'];
$stmt = $conn->prepare("SELECT * FROM users WHERE id=:id");
$stmt->execute(array(":id"=>$id));
$userRow=$stmt->fetch(PDO::FETCH_ASSOC);
if (isset($_POST['submit'])) {
$location = isset($_POST['location']) ? $_POST['location'] : null;
$about = isset($_POST['about']) ? $_POST['about'] : null;
$title = isset($_POST['title']) ? $_POST['title'] : null;
$sql_part = array();
$prepare = array();
if ($location) {
$sql_part[] = 'location = :location';
$prepare[':location'] = $location;
}
if ($about) {
$sql_part[] = 'about = :about';
$prepare[':about'] = $about;
}
if ($title) {
$sql_part[] = 'title = :title';
$prepare[':title'] = $title;
}
$prepare[':id'] = $id;
if (count($sql_part)) {
$sql = 'UPDATE users SET ';
$sql .= implode(',',$sql_part);
$sql .= ' WHERE id = :id';
$stmt = $dbh->prepare($sql);
if ($stmt) {
// Find another way too pass these through the refresh
// $result = $stmt->execute($prepare);
// $count = $stmt->rowCount();
header('Location: '. $_SERVER['REQUEST_URI']);
exit;
}
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>EpicOwl UK | CMS Users Edit Profile</title>
<Meta charset="utf-8">
<link rel="shortcut icon" href="../images/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" type="text/css" href="../css/main.css">
</head>
<body>
<div id="header">
<a href="index.PHP"><img id="logo" src="../images/logo.png" /></a>
<div id="navigation">
<ul>
<a href="../index.PHP"><li>Home</li></a>
<a href="./profile.PHP"><li>My Profile</li></a>
<a href="../admin/index.PHP"><li>Admin Panel</li></a>
</ul>
</div>
</div>
<div id="content">
<form method="post"><br />
<h2>Edit Profile</h2>
<label><strong>User Title:</strong></label><br />
<input type="text" name="title" maxlength="50" placeholder="<?PHP echo ($userRow['title']); ?>" /><br /><br />
<label><strong>My Location:</strong></label><br />
<input type="text" name="location" maxlength="50" placeholder="<?PHP echo ($userRow['location']); ?>" /><br /><br />
<label><strong>About Me:</strong><label><br />
<textarea name="about" rows="13" cols="60" maxlength="255" placeholder="<?PHP echo ($userRow['about']); ?>"></textarea><br /><br />
<button type="submit" name="update">Update</button><br /><br /><br />
</form>
</div>
<div id="footer">
<p class="copyright">© EpicOwl UK. All Rights Reserved.</p>
</div>
</body>
</html>