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php session 检测和注销_PHP
- WBOYOriginal
- 2016-06-01 12:23:41826browse
复制代码 代码如下:
session_start();
$_SESSION['username']="zhuzhao";
?>
复制代码 代码如下:
session_start();
unset($_SESSION['username']);
if(isset($_SESSION['username']))
echo "username已经存在";
else
echo "username不存在";
?>
session_start();
$_SESSION['username']="zhuzhao";
?>
复制代码 代码如下:
session_start();
unset($_SESSION['username']);
if(isset($_SESSION['username']))
echo "username已经存在";
else
echo "username不存在";
?>
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