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初学:在PHP开发中如何使用Session?

WBOY
Release: 2016-06-13 10:29:31
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如何使用Session ? 


//必须在使用前加上;
session_start(); 
?> 
//考虑我们有时候考虑是否写入session
if (isset($_POST[userid])){ 
//如果真的同意写入:
$_SESSION[userid] = $ccdot

}else{ 
//或者返回不能写入session

?> 


要清除的时候:

session_start(); 
unset($_SESSION[userid]); //OR : session_register(username); 

session_unregister()函数主要作用是注消当前的一个session变量。不过要注意的是,如果你用$HTTP_SESSION_VARS或$_SESSION在当前页面
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