Detailed implementation of PHP input information validator during registration_PHP tutorial

1. Class for verifying input information (mainly used to verify username, password, repeated password, email, other functions can be added)

Copy code The code is as follows:

/**
 * Validator for Register.
 */
final class RegisterValidator {
private function __construct() {

}
/**
     * Validate the given username, password, repeat_password and email.
     * @param $username, $password, $repeat_password and $email to be validated
     * @return array array of {@link Error} s
    */
public static function validate($username, $password, $repeat_password, $email) {
$errors = array();
$username = trim($username);
        $password = trim($password);
                                                                                                                                                    (strlen($username)<3) {
                                                                                                                                                                               >30) {
                                                                                                                                                                                                                                                    z]+$/',substr($username, 0, 1))) {
                 $errors[] = new Error('username', 'Username must start with a letter.');
                                                                                                             (!preg_match('/^[A-Za-z0-9_]+$/', $username)) {
        $errors[] = new Error('username', 'Username can only be letters and numbers and a combination of underscores ( _ ). ');
        } elseif (!$password) {
                 $errors[] = new Error('password', 'Password cannot be empty. ');
          } elseif (strlen($password)                   6) { elseif (strlen($password)>30) {
                     $errors[] = new Error('password', 'The password cannot exceed 30 characters.');
                                         ^[A-Za-z0-9!@#\$%\^&\*_]+$/', $password)) {
                     $errors[] = new Error('password', 'Password only It can be a combination of numbers, letters, or characters such as !@#$%^&*_ '); ('password', 'The password entered twice is inconsistent.');
           } elseif (!Utils::isValidEmail($email)) {
                      $errors[] = new Error('email', 'Email format Wrong. ');
} else {
username));
if ($user) {
$errors[] = new Error('username', 'The username has already been used.');
}

$ user = null;
// check whether email being used or not
$user = $dao->findByEmail(trim($email));
if ($user) {
$errors [] = new Error('email', 'This email address has been registered. ');
}
}
} return $errors;
}
}
?>


2、在注册页面进行调用

复制代码 代码如下:

$username = null;
$password = null;
$repeat_password = null;
$email = null;
$msg = "";
if (isset($_POST['username']) && isset($_POST['password'])
        && isset($_POST['repeat_password']) && isset($_POST['email'])) {
    $username = addslashes(trim(stripslashes($_POST ['username'])));
    $password = addslashes(trim(stripslashes($_POST ['password'])));
    $repeat_password = addslashes(trim(stripslashes($_POST ['repeat_password'])));
    $email = addslashes(trim(stripslashes($_POST ['email'])));
    // validate
    $errors = RegisterValidator::validate($username, $password, $repeat_password, $email);
    // validate
    if (empty($errors)) {
        // save
        $dao = new UserDao();
        $user = new User();
        $user->setEmail($email);
        $last_login_ip = Utils::getIpAddress();
        $user->setLastLoginIp($last_login_ip);
        $user->setUsername($username);
        $salt = substr(sha1(mt_rand()), 0, 22);
        $hash_password = sha1($salt . $password);
        $user->setPassword($hash_password);
        $user->setSalt($salt);
        $user = $dao->save($user);
        if ($user) {
            UserLogin::setUserInfo($user);
            Flash::addFlash('注册成功！');
        }
        else {
            Flash::addFlash('对不起，由于服务器内部错误，导致注册失败。请稍后再试。');
        }
        Utils::redirect('welcome');
    }

    foreach ($errors as $e) {
        $msg .= $e->getMessage()."
";
    }

3.代码中Error类用于记录验证时的错误信息

复制代码 代码如下:

/**
 * Validation error.
 */
final class Error {
    private $source;
    private $message;
    /**
     * Create new error.
     * @param mixed $source source of the error
     * @param string $message error message
    */
    function __construct($source, $message) {
        $this->source = $source;
        $this->message = $message;
    }
    /**
     * Get source of the error.
     * @return mixed source of the error
    */
    public function getSource() {
        return $this->source;
    }
    /**
     * Get error message.
     * @return string error message
    */
    public function getMessage() {
        return $this->message;
    }
}
?>

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