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判断用户是否登录,该如何处理

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Release： 2016-06-13 10:06:50
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判断用户是否登录
用户中心"; }else{ echo "判断用户是否登录,该如何处理 判断用户是否登录,该如何处理";}?>

这段代码，session_start();没有起到作用， 我这是写到了头文件里面了，我郁闷的是session在后台代码页面都是可以用的，为什么在前台页面代码里面就不可以用了。。

------解决方案--------------------
前面是否有输出了？文件的格式 是不是有BOM头

Related labels：
default gt lt quot session
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