a F3 Template extention, to render <select> tags

gistfile1.php

/**
 * sweetens <select>-TAG rendering with `group` attribute
 * @param $args
 * @return string
 */
static function renderSelect($args)
{
    $attr = $args['@attrib'];
    $tmp = \Template::instance();
    foreach ($attr as &$att)
        $att = $tmp->token($att);
    $tags = '';
    $html = (isset($args[0]))?$args[0]:'';
    if (array_key_exists('group', $attr)) {
        $html = '<?php foreach('.$attr['group'].' as $key => $val) {'.
                ' echo \'<option value="\'.$key.\'"\'.'.
                '( ( isset($_REQUEST[\''.$attr['name'].'\']) && $_REQUEST[\''.$attr['name'].'\'] == $key)?'.
                '\' selected="selected"\':\'\').\'>\'.$val.\'</option>\';'.'} ?>';
        unset($attr['group']);
    }
    foreach ($attr as $key => $val)
        $tags .= ' '.$key.'="'.$val.'"';
    return '<select'.$tags.'>'.$html.'</select>';
}