email validation, simple

Let's assume a email validation function - returns TRUE or FALSE. Checks format only, does not use any networking functions to verify the account actually exists.

 

<?php 

// email validation function
function email_valid ($email) { 
  if (eregi("^[a-z0-9._-]+@[a-z0-9._-]+.[a-z]{2,4}$", $email)) { return TRUE; } else { return FALSE; }
} 

?>