PHP 5.2 adds the filter_var function. It is an important function that assists with validating the user input.
<?php $email_address_dirty = "haim.michael@gmail.com"; if(filter_var($email_address_dirty,FILTER_VALIDATE_EMAIL)) { $email_address_clean = $email_address_dirty; } echo $email_address_clean; ?>
The following video clip shows the execution of this code sample and explains it.