我正在制作一个简单的用户更新页面，用户可以在其中更新密码和电子邮件，但我想用两个单独的表单来完成，因为如果我使用一个表单，并将其中一个字段发送为空，它会在数据库中将其更新为空。（我希望用户只能更新电子邮件或用户名）。
这是我的代码：
<html>
<body>
<?php
$con=mysqli_connect();
session_start();
if (!isset($_SESSION['ID'])){
header('location:login.php');
}
//
?>
<?php
if(!isset($_POST['submit'])) {
$con=mysqli_connect();
} else {
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
}
?>
<?php
$email = mysqli_real_escape_string($con,$_POST['Email']);
$password = mysqli_real_escape_string ($con,$_POST['Password']);
$ID = $_SESSION['ID'];
$emailErr = $passwordErr="";
function test_input($data)
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
if (!preg_match("/(['w'-]+'@['w'-]+'.['w'-]+)/",$email))
{
$emailErr = "Please enter a valid Email Address";
}
else {
$sql="UPDATE `customer`
SET `Email`='$email'
WHERE `ID`='$ID'";
$result = mysqli_query($con,$sql);
echo "Update complete!";
//header("Location: userpage.html");
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
}
}
?>
<form action=<?php echo htmlspecialchars($_SERVER["PHP_SELF"])?> method="post"><br />
Email:<br /> <input type="text" name="Email" value="<?php echo $email;?>">
<span class="error">* <?php echo $emailErr;?></span><br /><br />
<input type="submit">
</form>
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
if (!preg_match("/^[a-zA-Z0-9@_]*$/",$password))
{
$passwordErr = "Please enter a valid password";
}
else {
$sql="UPDATE `customer`
SET `Password`='$password'
WHERE `ID`='$ID'";
$result = mysqli_query($con,$sql);
echo "Update complete!";
//header("Location: userpage.html");
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
}
}
mysqli_close($con);
?>
<form action=<?php echo htmlspecialchars($_SERVER["PHP_SELF"])?> method="post"><br />
Password:<br /> <input type="password" name="Password">
<span class="error">* <?php echo $passwordErr;?></span><br /><br />
<input type="submit">
</form>
</body>
</html>
使用此代码，如果我更新第二个表单（即密码），第一个表单将出错，因为它在提交时执行。如何使我在同一页面上有两个表单，在单击提交按钮时更新表中的不同行，而不重定向到不同的页面？感谢
您可以给每个提交（或其他输入）一个唯一的名称，并检查它是否在POST ing 之后设置
例如，给submit按钮一个名称：
<input type="submit" name="turtle">
在你的PHP中：
<?php
if(isset($_POST['turtle'])) {
// Process the form associated with the "turtle" submit button.
} else {
// Do the other form stuff.
}
?>
为什么不组合成一个表单并检查用户是否输入了密码？
<?php
$con = mysqli_connect();
session_start();
if (!isset($_SESSION['ID'])){
header('location:login.php');
}
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if (isset($_POST['submit'])):
$email = mysqli_real_escape_string($_POST['Email']);
$password = mysqli_real_escape_string($_POST['Password']);
$ID = $_SESSION['ID'];
// Validate Email
if (!preg_match("/(['w'-]+'@['w'-]+'.['w'-]+)/",$email)) {
$errors[] = "Please enter a valid Email Address";
}
// Check if the password field has been filled in
if($password) {
// If it has then do your regex...
if (!preg_match("/^[a-zA-Z0-9@_]*$/",$password)) {
$errors[] = "Please enter a valid password";
$update_password = false;
} else {
$update_password = true;
}
}
if(count($errors) == 0) {
// Update Email
$sql="UPDATE `customer`
SET `Email`='$email'
WHERE `ID`='$ID'";
$result = mysqli_query($con,$sql);
// If the test above passed then update the password
if($update_password) {
$sql="UPDATE `customer`
SET `Password`='$password'
WHERE `ID`='$ID'";
$result = mysqli_query($con,$sql);
}
echo 'Update Complete';
//header("Location: userpage.html");
}
?>
<?php else: ?>
<form action=<?php echo htmlspecialchars($_SERVER["PHP_SELF"])?> method="post"><br />
<?php if($errors): ?>
<span class="error">* <?php echo explode(', ',$errors);?></span><br /><br />
<?php endif; ?>
Email:<br /> <input type="text" name="Email" value="<?php echo $email;?>">
Password:<br /> <input type="password" name="Password">
<input type="submit" name="submit">
</form>
<?php endif; ?>
p.S我整理了你的密码，因为它让我得了疝气。
使用隐藏输入来分离请求
或
将不同表单的单独文件用作目标。。。
或
使用jboneca的答案