How to close session in php

How to close the session in php: You can use the unset() or session_destroy() function to close the session, such as [session_unset(); session_destroy();].

#If we want to delete some session data, we can use the unset() or session_destroy() function.

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The following are three ways to destroy the session:

The code is as follows:

<?php  
/* session的销毁 */
@header(&#39;content-type:text/html;charset=utf-8&#39;);
session_start();
$_SESSION[&#39;username&#39;]=&#39;test1&#39;;
echo &#39;session没销毁时：&#39;.$_SESSION[&#39;username&#39;];
echo "<br>";
//方法一  
// $_SESSION[&#39;username&#39;]=null;  
//方法二  
//session_unset();  
//session_destroy();  
//方法三  
$_SESSION=array();
echo &#39;session销毁后：&#39;.$_SESSION[&#39;username&#39;];

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