유챗 관련 몇가지 질문

<?php
include_once("_common.php");

if(!function_exists('uchat_array2data')) {
    function uchat_array2data($arr) {
        $arr['time'] = time();
        ksort($arr);
        $arr = array_filter($arr);
        $arr['hash'] = md5(implode($arr['token'], $arr));
        unset($arr['token']);
        foreach ($arr as $k => &$v){ $v = $k.' '.urlencode($v); }
        return implode("|", $arr);
    }
}
$joinData = array();
$joinData['room'] = 'bingbon';
$joinData['token'] = 'a08216ec91dc0e3ab4265f6ad48e50d3';

$joinData['nick'] = $member['mb_nick'];
$joinData['id'] = $member['mb_id'];
$joinData['level'] = $member['mb_level'];
$joinData['auth'] = $is_admin?"admin":"";
if($is_member) {
if ($info['grade'] == "관리자" || $info['grade'] == "최고관리자" || $info['grade'] == "운영자") {
$uicon_file = "/img/level/폴더경로/admin.gif";
} else {
$uicon_file = "/img/level/폴더경로/".$info['level'].".gif";
}
    if(file_exists((G5_PATH?G5_PATH:$g4['path']).$uicon_file))
        $joinData['icons'] = $uicon_file;
}
//$joinData['nickcon'] = '';
//$joinData['other'] = '';
?>