i want some special character in password

Question

i wrote

$this->form_validation->set_rules(
    'password',
    'password',
    'required|min_length[4]|max_length[8]|regex_match[/^[a-z0-9]+$/]'
);

but I want :
Password must contain exactly 2 special characters and 2 uppercase letters

how to write ?

Why? https://xkcd.com/936/ (not to mention only 4-8 characters is always going to be relatively weak) — CD001, Mar 27 '17 at 08:42
other than the regular password string ? min_length[4] is not very protective — Mudassar Khani, Mar 27 '17 at 08:50
Reference: http://stackoverflow.com/questions/2637896/php-regular-expression-for-strong-password-validation — dhruv jadia, Mar 27 '17 at 10:36

Nawin · Answer 1 · 2017-03-27T09:58:46.830

3

You can use callback function: Example:

public function password_check($str)
{
   if (preg_match('#[\W]{2}#', $str) && preg_match('#[A-Z]{2}#', $str)) {
     return TRUE;
   }
   return FALSE;
}

And Validation Part:

$this->form_validation->set_rules('password', 'Password', 'required|matches[passconf]|min_length[8]|alpha_numeric|callback_password_check');

edited Mar 27 '17 at 09:58

answered Mar 27 '17 at 08:49

Nawin

1,653
2
14
23

he wants 2 special characters not numbers you have taken [0-9] – dhruv jadia Mar 27 '17 at 09:11
\w matches a word character. not special character – dhruv jadia Mar 27 '17 at 09:51
\w Any word character (letter, number, underscore) – Nawin Mar 27 '17 at 09:59
\W Any non-word character check here http://php.net/manual/en/function.preg-match.php – Nawin Mar 27 '17 at 09:59

score 0 · Answer 2 · answered Mar 27 '17 at 08:46

0

I can provide a special character regularly expression to u:

/[\'.,:;*?~`!@#$%^&+=)(<>{}]|\]|\[|\/|\\\|\"|\|/

Good luck!

answered Mar 27 '17 at 08:46

ferry

64
4

thanks, sir but I want exactly 2 special characters and 2 uppercase letters that's why I am confuse – bhargav Patel Mar 27 '17 at 08:48

i want some special character in password

2 Answers2