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This article mainly shares with you a session method for getting started with PHP. It has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor and take a look.
Function: Store a user's information, change user session settings, and can be used on all pages.
Open the program, make some changes, then save and exit. It's just a session. The server can know who is operating through the session.
Working mechanism: Create a uid for the visitor, store variables according to this uid, the uid is stored in a cookie, or URL transmission.
Save user information before the session and start the session
Note: The session_start() function must be located before the 100db36a723c770d327fc0aef2ce13b1 tag:
<?php session_start(); ?><html><body></body></html>
Register the user session with the server to facilitate saving user information, and assign a uid to the user session
Store and obtain session using $ _SESSION
<?php
session_start();
// 存储 session 数据
if(isset($_SESSION['views']))
{
$_SESSION['views']=$_SESSION['views']+1;
}
else{
$_SESSION['views']=9999;
}
?>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<?php
// 检索 session 数据
echo "浏览量：". $_SESSION['views'];
?>
</body
></html>Output "Views: 9999"
Which one to useunset() or session_destroy() Function destruction
<?php
session_start();
if(isset($_SESSION['views']))
{
//释放指定的 session 变量
unset($_SESSION['views']);
}
//彻底销毁 sessionsession_destroy();
?>Related recommendations:
##session principle and implementation sharing
Session working principle in PHP
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