PHP is the easiest way to verify Email and IP addresses

Check whether a user has entered a valid email address. The simplest method is to use the PHP built-in function filter_var (), which can check the email address.

The code is as follows:	Copy code
<? Php Filter_var ('sgamgee @ example.com ', FILTER_VALIDATE_EMAIL ); // Returns "sgamgee@example.com". This is a valid email address. Filter_var ('sauron @ Mordor', FILTER_VALIDATE_EMAIL ); // Returns boolean false! This is * not * a valid email address. ?>