A simple way to validate email address using filter_var

A simple way to validate email address is to use filter_var, for example:
 if(!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
      {echo ''Your email address is not a valid email address";}
There are other options for filter_var function:
PHP function filter_var — Filters a variable with a specified filter

option: FILTER_VALIDATE_EMAIL,FILTER_VALIDATE_IP,FILTER_VALIDATE_URL, FILTER_VALIDATE_INT,  FILTER_VALIDATE_BOOLEAN, FILTER_VALIDATE_FLOAT, FILTER_VALIDATE_REGEXP

Video: PHP, verify email address and IP address using filter_var