Can php handle high concurrency? PHP high concurrency solution

How does php handle high concurrency issues during execution? Next, let’s take a detailed look at a solution to high concurrency in PHP.

Let’s first take a look at the execution process of PHP on the server: when the user requests the server PHP file, the server will perform syntax analysis on the PHP file, followed by parsing, and finally running. When the PHP file has content output, the content will first pass through the server's PHP buffer and then be passed to the client through TCP. (Buffer is actually a buffer, a memory address space, mainly used to store data area)

It can be seen that if the user directly accesses the static page, the server's response time will generally be longer than the access time. Dynamic files are short in duration. If we can convert the dynamic files that users want to access into static files first, we can speed up the speed at which users access the page (the speed at which they obtain the web page). Of course, we must pay attention to the application scenarios of staticization. The staticization of pages is mainly used for pages whose page content does not change frequently.

Regarding staticization, PHP’s staticization is divided into: pure static and pseudo-static. Pure statics are further divided into: local pure statics and total pure statics. Everything here is purely static.

One of the ways to staticize the page is to use the buffer OB that comes with PHP:

The following is a simple implementation of page buffering

<?php
//可以根据 前端传递参数 COOKIE等进行缓存
$id = $_GET[&#39;id&#39;];
//设置缓冲文件名
$cache_name = md5(__FILE__) . &#39;-&#39; . $id . &#39;.html&#39;;
//失效时间
$life = 3600;
//判断文件是否存在以及是否过期
if (file_exists($cache_name) && (filectime($cache_name) > time() - $life)) {
    include $cache_name;
    exit;
}
//开启缓冲区
ob_start();
echo date(&#39;Y-m-d H:i:s&#39;);
$content = ob_get_contents();
ob_end_clean();
//写入到缓冲文件
file_put_contents($cache_name, $content);
echo $content;

In addition to the above methods In addition, we can use some of the buffering mechanisms that come with the framework to achieve

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