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session_start()函数有什么作用啊解决办法

WBOY
Release： 2016-06-13 10:24:24
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session_start()函数有什么作用啊？
最好能够举个简单的例子，谢谢了

------解决方案--------------------
是开启 session 功能。
不开启，又怎样使用 $_SESSION 功能呢？？对不？

一般在使用前，要加上 session_start 这句的。

Related labels：
session start
source：php.cn
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