Cake\Localized\Validation\ItValidation::postal PHP 메소드

    public static function postal($check)
    {
        $pattern = '/^[0-9]{5}$/i';
        return (bool) preg_match($pattern, $check);
    }

 /**
  * test the postal method of ItValidation
  *
  * @return void
  */
 public function testPostal()
 {
     $this->assertTrue(ItValidation::postal('10096'));
     $this->assertFalse(ItValidation::postal('1046'));
 }