Phalcon Regex验证密码不起作用

Question

I don't understand why my Regex doesn't work. There is always an error message for any passwords.

 $this->add('password', new RegexValidator(array(
           'pattern' => '.{0}|.{4,}',
           'message' => '0 or 4 char minimum'
 )));

The error is : 0 or 4 char minimum.

Answer 1

Just combine the StringLenght validation with the allowEmpty option:

$badPassMessage = 'Define a password using exactly 4 characters or leave it empty!';
$validation->add('password', new StringLength(array(
      'max' => 4,
      'min' => 4,
      'allowEmpty' => true,
      'messageMaximum' => $badPassMessage,
      'messageMinimum' => $badPassMessage
)));

BONUS

I'd recommend you to always test your patterns with this excellent tool:

regular expressions 101

Always make sure that the regex flavor is set to pcre (php) .