[RESOLVED] count digits of input

[mikawhat]

I want to allow users to change their passwords, but the password has to be a 6 digit value. Is there a function that i could use to count the digits and validate the input?

[NogDog]

Amongst the many possibilities:

if(ctype_digit($pwd) and strlen($pwd) == 6)
{
   // valid
}

if(preg_match('/^\d{6}$/', $pwd))
{
   // valid
}

[mikawhat]

OK thank you!