jaw_css_to_array

function jaw_css_to_array($css) {
    if (empty($css)) return array();
    $css_array = array();
    $css = preg_replace('#/\*.*\*/#U', '', str_replace(array("\n","\r",';base64'), array('','','-base64'), $css));
    preg_match_all("/([^{}]*)\{(([^{}]*|(?R))*)\}/",$css,$matches);
    foreach ($matches[2] as $key => $rules) {
        $rules = trim($rules,"; \t\n\r\0\x0B");
        if (strpos($rules,'{') !== false) {
            $css_array[trim($matches[1][$key])] = jaw_css_to_array($rules);
        } else {
            $selectors = explode(',',$matches[1][$key]);
            $rules = explode(';',$rules);
            $rules_array = array();
            foreach ($rules as $rule) {
                if (!empty($rule)) {
                    $rule = explode(':', $rule, 2);
                    $rules_array[] = strtolower(trim($rule[0])) . ': ' . str_replace(array('-base64'), array(';base64'), trim($rule[1]));
                }
            }
            foreach ($selectors as $selector) {
                $selector = trim($selector);
                $selector = preg_replace_callback('/(\:)([a-z0-9\-]+)(\(|>|#|\.|\:|\s|$)/i', function ($matches) { return strtolower($matches[0]); }, $selector);
                $selector = preg_replace_callback('/(^|\s|>)([a-z0-9\s>]+)(>|#|\.|\:|\s|$)/i', function ($matches) { return strtoupper($matches[0]); }, $selector);
                $css_array[$selector] = (is_array($css_array[$selector]) ? array_merge($css_array[$selector],$rules_array) : $rules_array);
            }
        }
    }
    return $css_array;
}