PHP scheduled update program design ideas sharing_PHP tutorial

Looking back now, my previous idea was wrong. The execution process of the web page

Open WEB page —- Load HTML code (including CSS, javascript) — Execute PHP code — Complete

Let’s roughly understand it as above.

We all know that PHP is a server-side script, which has a timeout setting, which can be processed through the set_time_limit() function. But this way of handling PHP code is very

Consumption of CPU resources. So it is not recommended to loop through PHP code.

Generally, it is handled with javascript.

The php background processing code is simple, just accept the data POST from the front desk. The data is then processed and stored in the database.

It’s that simple, but the page cannot be closed. You can understand this as the background program of the software.

In fact, a software is divided into: front-end, back-end, and server-side. Both the front-end and back-end run on your computer.

Tencent software background program

The background program can only be monitored through the task manager, but what does it do? You have no idea.

Only 360 can steal your privacy like a "worker bee", and only QQ can obtain cookies.

Not much to say, this is a kind of software design pattern, just understand it.

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