Solve the problem of slow startup using session_start in memcache_PHP tutorial

session_start is slow to start because my machine uses memcache to cache the session. In this way, I find that mysql query is super slow after the user logs in. Let me introduce a temporary solution.

Below is our test page, just a few sentences

The code is as follows

代码如下	复制代码
session_start(); echo '111';exit ?>

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session_start();

echo '111';exit

代码如下	复制代码
if(!isset($_COOKIE['PHPSESSID'])) { setcookie('PHPSESSID', time(), time()+60*60, '/' ); header('location:index.php'); exit; }

?>

代码如下	复制代码
if(!isset($_COOKIE['zenid']) && $_SERVER['HTTP_USER_AGENT']!='UDROBOT') { setcookie('zenid', md5(md5(time().rand(999,1000)).rand(999,1000)), time()+60*60, '/' ); header('location:'.$_SERVER['REQUEST_URI']); exit; } ..... ?>

CPU, IO, disk, memory... these are all fine and have been checked. At first, I thought it was a network problem, being blocked, filtering, memory... but in the end it was confirmed that it was not a problem with hardware resources.

Now adding an extra piece of code can solve this problem. It treats the symptoms but not the root cause. We haven’t found out what causes session_start to start slowly. First automatically create a PHPSESSID, which is automatically assigned without session_start.

The code is as follows

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if(!isset($_COOKIE['PHPSESSID'])) { setcookie('PHPSESSID', time(), time()+60*60, '/' );           header('location:index.php'); exit; }

The final look is as follows:

The code is as follows

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<🎜>if(!isset($_COOKIE['zenid']) && $_SERVER['HTTP_USER_AGENT']!='UDROBOT')<🎜> {<🎜> setcookie('zenid', md5(md5(time().rand(999,1000)).rand(999,1000)), time()+60*60, '/' );<🎜>          header('location:'.$_SERVER['REQUEST_URI']);<🎜> exit;<🎜> }<🎜> <🎜>.....<🎜> ?> http://www.bkjia.com/PHPjc/629892.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629892.htmlTechArticlesession_start is slow because my machine uses memcache to cache the session, so I find that mysql query is super slow after the user logs in. Okay, let me introduce a temporary solution. ...