Strip out HTML and Special Characters

Question

I\'d like to use any php function or whatever so that i can remove any HTML code and special characters and gives me only alpha-numeric output

$des = "He         


        

Answer 1

You can do it in one single line :) specially useful for GET or POST requests

$clear = preg_replace('/[^A-Za-z0-9\-]/', '', urldecode($_GET['id']));