告别繁琐校验：如何使用Composer和zf1s/zend-validate轻松构建健壮的表单验证

<pre class="brush:php;toolbar:false;"><?php
$email = $_POST['email'] ?? '';
$password = $_POST['password'] ?? '';
$age = $_POST['age'] ?? '';

$errors = [];

// 邮箱验证
if (empty($email)) {
    $errors['email'] = '邮箱不能为空。';
} elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    $errors['email'] = '邮箱格式不正确。';
}

// 密码长度验证
if (empty($password)) {
    $errors['password'] = '密码不能为空。';
} elseif (strlen($password) < 6) {
    $errors['password'] = '密码至少需要6个字符。';
}

// 年龄验证
if (empty($age)) {
    $errors['age'] = '年龄不能为空。';
} elseif (!is_numeric($age) || $age < 18 || $age > 100) {
    $errors['age'] = '年龄必须是18到100之间的数字。';
}

if (!empty($errors)) {
    // 处理错误，例如显示给用户
    print_r($errors);
} else {
    // 数据合法，继续处理
    echo "数据验证通过！";
}

<code class="bash">composer require zf1s/zend-validate</code>

<pre class="brush:php;toolbar:false;"><?php
require 'vendor/autoload.php'; // 引入 Composer 自动加载

use Zend_Validate;
use Zend_Validate_EmailAddress;
use Zend_Validate_StringLength;
use Zend_Validate_Between;
use Zend_Validate_Digits;

// 假设我们有用户提交的数据
$userData = [
    'email' => 'test@example.com',
    'password' => 'secret123',
    'age' => 25,
    'username' => 'john_doe',
];

$errors = [];

// 1. 邮箱验证
$emailValidator = new Zend_Validate_EmailAddress();
if (!$emailValidator->isValid($userData['email'])) {
    $errors['email'] = $emailValidator->getMessages();
}

// 2. 密码长度验证 (至少6个字符)
$passwordValidator = new Zend_Validate_StringLength(['min' => 6]);
// 也可以自定义错误消息
$passwordValidator->setMessage('密码至少需要 %min% 个字符。', Zend_Validate_StringLength::TOO_SHORT);
if (!$passwordValidator->isValid($userData['password'])) {
    $errors['password'] = $passwordValidator->getMessages();
}

// 3. 年龄验证 (必须是数字，且在18到100之间)
$ageValidator = new Zend_Validate(); // 创建一个验证器链
$ageValidator->addValidator(new Zend_Validate_Digits()) // 必须是数字
             ->addValidator(new Zend_Validate_Between(['min' => 18, 'max' => 100])); // 范围在18-100之间

if (!$ageValidator->isValid($userData['age'])) {
    $errors['age'] = $ageValidator->getMessages();
}

// 4. 用户名验证 (例如：长度在3到20之间)
$usernameValidator = new Zend_Validate_StringLength(['min' => 3, 'max' => 20]);
if (!$usernameValidator->isValid($userData['username'])) {
    $errors['username'] = $usernameValidator->getMessages();
}

if (!empty($errors)) {
    echo "数据验证失败：\n";
    foreach ($errors as $field => $messages) {
        echo "字段 '{$field}' 的错误：\n";
        foreach ($messages as $message) {
            echo "- " . $message . "\n";
        }
    }
} else {
    echo "所有数据验证通过！可以安全地处理数据了。\n";
}