PHP custom function recursively replaces the contents of an array

/**
 desc: recursively replace array contents
 link: bbs.it-home.org
 date: 2013/2/22
*/
function arrContentReplact($array)
{
    if(is_array($array))
    {
        foreach($array as $k => $v)
        {
            $array[$k] = arrContentReplact($array[$k]);
        }
    }else
    {
        $array = str_replace(
        array('<', '>'),
        array('{', '}'),
        $array
        );
    }
    return $array;
}
//调用示例
$arr = array(array("< jbxue1>","< jb2xue>",array("",array(""))),"< jb33xue>","< jbxue44>","< 44jbxue>");
$arr3 = arrContentReplact($arr);
echo "";</li>
<li>print_r($arr3);</li>
<li>echo "";
?>