Data validation syntax -- looks Greek to me

Dave · 04-22-2008, 02:45 PM

Hi, all...

This is part of an example from one of the books I am using to learn PHP.

I understand the purpose, but I need help understanding the specifics of the

"^([_a-z.... etc.

section of the code. I've already gone to the PHP Manual and did not manage to find specific help on this.

Thanks very much...
Dave
===============================

PHP Code:


			
   function validate_email($email)

   {  

      # Create the syntactical validation regular expression



      $regexp = "^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)

                 (\.[a-z0-9-]+)*(\.[a-z]{2,6})$" ;



      # Validate the syntax



      if (eregi($regexp, $email)) return 1;

      else return 0;

   }