Modify PHP session default time method_PHP tutorial

The default session validity period in PHP is 1440 seconds (24 minutes). What if we want the session to fail to expire? Let’s first introduce the best method without modifying the program, because if the program is modified , the testing department must be very depressed like me, then the only way to modify the system environment configuration is actually very simple, open the php.ini setting file,

modify the three lines as follows:

1. session.use_cookies
Set the value of this to 1 and use cookies to pass sessionid

2. session.cookie_lifetime
This represents the time that the SessionID is stored in the client cookie. The default is 0, which means that the SessionID will be invalidated as soon as the browser closes it... It is because of this that the PHP session cannot be used permanently! So let's set it to a number we think is big, how about 999999999, that's ok! that's all.

3. session.gc_maxlifetime
This is the time that the Session data is stored on the server side. If this time is exceeded, the Session data will be automatically deleted! Then we also set it to 99999999

If you cannot modify the php.ini file

The code is as follows

代码如下	复制代码
session_start(); // 启动Session $_SESSION['count']; // 注册Session变量Count isset($PHPSESSID)?session_id($PHPSESSID):$PHPSESSID = session_id(); // 如果设置了$PHPSESSID，就将SessionID赋值为$PHPSESSID，否则生成SessionID $_SESSION['count']++; // 变量count加1 setcookie('PHPSESSID', $PHPSESSID, time()+3156000); // 储存SessionID到Cookie中 echo $count; // 显示Session变量count的值 ?>

Copy code

session_start(); // Start Session

$_SESSION['count']; // Register Session variable Count

isset($PHPSESSID)?session_id($PHPSESSID):$PHPSESSID = session_id(); // If $PHPSESSID is set, assign SessionID to $PHPSESSID, otherwise generate SessionID $_SESSION['count']++; // Add 1 to variable count setcookie('PHPSESSID', $PHPSESSID, time()+3156000); // Store SessionID in Cookie echo $count; // Display the value of Session variable count ?>

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