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我在 PHP 中编写表单验证代码,但我遇到了复选框验证问题。浏览表格时,如果您不选中复选框,它将给出正确的错误消息。

但是,即使您确实选中了该复选框,它仍然会给出相同的错误消息。

这是到目前为止的代码:

if (isset($_POST['firstname'], $_POST['lastname'], $_POST['address'], $_POST['email'], $_POST['password'])) {
    $errors = array(); 

    $firstname = $_POST['firstname'];
    $lastname = $_POST['lastname'];
    $address = $_POST['address'];
    $email = $_POST['email']; 
    $password = $_POST['password'];

    if (empty($firstname)) {
        $errors[] = 'First name can\'t be empty'; 
    }

    if (empty($lastname)) {
        $errors[] = 'Last name can\'t be empty'; 
    }

    if (empty($address)) {
        $errors[] = 'Address can\'t be empty';
    }

    if (filter_var($email, FILTER_VALIDATE_EMAIL) === FALSE) {
        $errors[] = 'Please enter a valid email'; 
    }

    if (empty($password)) {
        $errors[] = 'Password can\'t be empty'; 
    }

}

if (!isset($checkbox)) {
        $errors[] = 'Please agree to the privacy policy';
} 

$sex = $_POST['sex'];
$age = $_POST['age'];
$checkbox = $_POST['checkbox'];

$_SESSION['validerrors'] = $errors;
$_SESSION['firstname'] = $firstname;
$_SESSION['lastname'] = $lastname;
$_SESSION['address'] = $address;
$_SESSION['email'] = $email;
$_SESSION['sex'] = $sex;
$_SESSION['age'] = $age; 
$_SESSION['password'] = $password;
$_SESSION['checkbox'] = $checkbox;

if (!empty($errors)) {
    header('Location: index.php'); 
} else { 
    header('Location: writevalues.php'); 
}

上述代码中的其他所有内容都运行良好,但我无法找到任何有关复选框验证情况的有用答案。提前致谢!

4

1 回答 1

5

您正在调用此代码:

if (!isset($checkbox)) {
        $errors[] = 'Please agree to the privacy policy';
} 

在此行之前:

$checkbox = $_POST['checkbox'];

所以当然isset($checkbox)会回来false,因为它当时没有设置!

您可以将 if 语句更改为:

if(!isset($_POST['checkbox'])){ ...

或者将这一行移到$checkbox = $_POST['checkbox'];if 语句上方。

于 2013-05-14T12:39:33.563 回答