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This article introduces the relevant knowledge of "how to use it in php". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Php is the html tag, which means that the output as is does not change; in php code, it is mainly used to do error code output, or print array output to maintain the unity of the format.

This article operating environment: Windows7 system, PHP7.1 version, Dell G3 computer.

What does it mean in php?

The role of pre in php:

Is the html tag, which means output as is without change.

In php code, pre is mainly used to output error codes, or to print array output to maintain the unity of the format.

For example:

The effect is as follows:

The format is messy.

However, use pre to deal with it:

That's what it is:

Much more comfortable.

You can also not write pre outside the php tag, only at the end of the output:

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