织梦缩略图有则显示,没有则显示自定义随机图片

[field:array runphp='yes']
@me = (strpos(@me['litpic'],'defaultpic') ? "
<a class='focus' href='{@me['arcurl']}'><img src='/uploads/lztp/".mt_rand(1,300).".jpg' class='thumb' /></a>" : "
<a class='focus' href='{@me['arcurl']}'><img src='{@me['litpic']}' class='thumb'/></a>"); 
[/field:array]