Username & Password comparison!

i having a problem on how to check the user name and password during registration session...

the input like this :-

user name : admin
password : admin123
/* False */

if something like this happen, the system should output error message because the password have partial words same as the user name. if can, i would like to limit it to allow only 3 consecutive letter to be same.

example :-

user name : admin
password : admi123
/* False */

user name : admin
password : adm789
/* True (allowed) */

can anybody help me here?

 

This doesn't exactly do what you want, but I guess it's close.

function is_secure_pass($username, $password, &$percent = 0)
{
	$passparts = preg_split('/\d/', $password, -1, PREG_SPLIT_DELIM_CAPTURE);

	foreach (array_filter($passparts) AS $part)
	{
		similar_text($part, $password, $p);
		
		if ($p > 70)
		{
			$percent = $p;
			return false;
		}
	}
	
	return true;
}

PHP:

Usage example:

$name = 'admin';
$pass = 'adm123';

if (is_secure_pass($name, $pass))
{
    echo 'Good password';
}
else
{
    echo 'Bad password';
}

PHP: