<?php
session_start();
$_SESSION['myvar'] = 5;
echo $_SESSION['myvar']; //OUTPUT 5
session_destroy(); //清除会话ID
echo '<hr>';
echo $_SESSION['myvar']; //已经清除会话ID了,应该为空了吧??为什么还输出 5 ????>
session_start();
$_SESSION['myvar'] = 5;
echo $_SESSION['myvar']; //OUTPUT 5
session_destroy(); //清除会话ID
echo '<hr>';
echo $_SESSION['myvar']; //已经清除会话ID了,应该为空了吧??为什么还输出 5 ????>
session_destroy(); //清除会话ID这句的前面加多一句
$_SESSION=array();