if判断里这样写是什么意思？

Question

 if  ( fromID($object->FromUserName) <> ""){

                $content[] = array("Title" =>"会员卡", 

                "Description" =>"点击图片进入会员卡管理", 

                "PicUrl" =>"http://pic2.ooopic.com/01/38/77/75bOOOPICea.jpg", 

                "Url" =>"http://yijc168.sinaapp.com/member.php?openid=".$object->FromUserName);

Answer 1

这个对象不等于空，好好补补基础！