dedecms自定义表单验证

<?php
// 假设这是处理表单提交的PHP文件

// 获取表单提交的数据
$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];

// 定义验证规则
$rules = [
    'username' => 'required|min:3|max:20',
    'email' => 'required|email',
    'password' => 'required|min:6'
];

// 验证函数
function validate($data, $rules) {
    $errors = [];
    foreach ($rules as $field => $rule) {
        list($ruleName, $params) = explode(':', $rule);
        switch ($ruleName) {
            case 'required':
                if (empty($data[$field])) {
                    $errors[$field] = "该字段是必填项";
                }
                break;
            case 'min':
                if (strlen($data[$field]) < $params) {
                    $errors[$field] = "该字段至少需要{$params}个字符";
                }
                break;
            case 'max':
                if (strlen($data[$field]) > $params) {
                    $errors[$field] = "该字段最多只能包含{$params}个字符";
                }
                break;
            case 'email':
                if (!filter_var($data[$field], FILTER_VALIDATE_EMAIL)) {
                    $errors[$field] = "请输入有效的邮箱地址";
                }
                break;
        }
    }
    return $errors;
}

// 执行验证
$errors = validate($data, $rules);

if (!empty($errors)) {
    // 验证失败，返回错误信息
    echo json_encode(['status' => 'error', 'errors' => $errors]);
} else {
    // 验证成功，处理表单数据
    echo json_encode(['status' => 'success', 'message' => '表单提交成功']);
}
?>