Easiest way to strip out any NON alphanumeric characters from a string...

[cgm225]

What is the easiest way to strip out any NON alphanumeric characters from a string contained in a variable?

 

Example:

 

$string = "Hello!!!!!!!!##";

[phpSensei]

<?php
$string = "numbers 12345, and symbols !£$%^&";
$new_string = preg_replace("/[^a-zA-Z0-9s]/", "", $string);
echo $new_string
?>