Minify CSS

<?php
function minCSS( $string ) {

    /* Kill comments */
    $string = preg_replace('!/\*.*?\*/!s','', $string);
    $string = preg_replace('/\n\s*\n/',"\n", $string);

    /* Minification */
    $string = preg_replace('/[\n\r \t]/',' ', $string);
    $string = preg_replace('/ +/',' ', $string);
    $string = preg_replace('/ ?([,:;{}]) ?/','$1',$string);

    /* Remove Trailing Semicolon */
    $string = preg_replace('/;}/','}',$string);

    return $string;
}
?>