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php session detection and logout_PHP tutorial
- WBOYOriginal
- 2016-07-21 15:47:35827browse
Copy code The code is as follows:
session_start();
$_SESSION['username'] ="zhuzhao";
?>
Copy code The code is as follows:
< ;?php
session_start();
unset($_SESSION['username']);
if(isset($_SESSION['username']))
echo "username already exists";
else
echo "username does not exist";
?>
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