Hi,all
I want to ask for the php code to check the password validation?
It couldn't be entire alphabetic or entirely numeric?
Thanks.

Are you asking how to check for only numbers in a string? if so is_numeric would do this:

if (is_numeric($password)) {
        echo "Password is numeric";
     } else {
        echo "Password is not numeric";
   }

Or for alpha-numeric strings:

if (preg_match('/^[A-Za-z0-9]+$/', $password)) {
  // Do something
}
if (preg_match('/^[A-Za-z0-9]+$/', $password)) {
  // Do something
}

if i type password: pass123 should work
and i type password should not work correct??

here is a regex that will make sure the password has at least 1 uppercase letter, 1 lower case letter, and a number. which is a pretty secure password.

preg_match( "/^.*(?=.{3,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$/",$password)

Thanks´╝îkkeith29
Here is the code i wrote:

preg_match( "/^.*(?=.*{3,})(?=.*[a-z])(?=.*[A-Z]).*$/",$pass)

But get the warning:

Warning: preg_match() [function.preg-match]: Compilation failed: nothing to repeat at offset 11 in password.php

Any idea about this??
Thanks.
Really new in php

preg_match( "/^.*(?=.{3,})(?=.*[a-z])(?=.*[A-Z]).*$/",$pass)

Try this!

no, actually this make my code die.
Which i want is really simple: password must more than 6 characters and should have one number and one alpha
Thanks.