PHP Slug generator class/method

StringUtil.php

/**
 * Description of StringUtil
 *
 * @author <rafaelgou@gmail.com> Rafael Goulart
 */
class StringUtil {

    /**
    * Slugify a text and remove accents
    *
    * @param string $text The text.
    * @param string $separator The separator
    *
    * @return string The text slugified.
    */
    static public function slugify($text, $separator='-')
    {
        // remove accents
        $from = 'ŠŒŽšœžŸ¥µÀÁÂÃÄÅÆÇÈÉÊËẼÌÍÎÏĨÐÑÒÓÔÕÖØÙÚÛÜÝßàáâãäåæçèéêëẽìíîïĩðñòóôõöøùúûüýÿ';
        $to   = 'SOZsozYYuAAAAAAACEEEEEIIIIIDNOOOOOOUUUUYsaaaaaaaceeeeeiiiiionoooooouuuuyy';
        $text = utf8_decode($text);
        $text = strtr($text, utf8_decode($from), $to);
        
        // replace all non letters or digits by -
        $text = preg_replace('/\W+/', $separator, $text);
        
        // trim and lowercase
        $text = strtolower(trim($text, $separator));
        
        return $text;
    }
}