Preg replace help

[Hyperz]

How about

<?php

function clean($txt)
{
    // remove everything that is not a word, _, -, whitespace or a number
    $result = preg_replace('/[^\w\d\s\-]+/', '', $txt);
    // replace numbers with a space
    $result = preg_replace('/\d+/', ' ', $result);
    // remove words <= 3 chars
    $result = preg_replace('/\b\w{1,3}\b/', '', $result);
    // trim spaces
    $result = preg_replace('/[ ]{2,}/', ' ', $result);
    // trim spaces at the end or beginning of lines
    $result = preg_replace('/[ ]*(\r{0,1}\n)[ ]*/', '$1', $result);
    
    return $result;
}

?>

Grrr PHP