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This article mainly introduces "what is the pre of php". In the daily operation, I believe that many people have doubts about what the pre of php is. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "what is the pre of php?" Next, please follow the editor to study!

Php pre is a pretypesetting mark, which mainly maintains the unity of the format when making error code output or printing array output.

The operating environment of this paper: Windows7 system, PHP7.1, Dell G3.

What does php pre mean?

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:

Extended data

Tips for using the html tag pre in php debugging:

When debugging php programs, we often print information to view, print_r function can be very convenient to print the contents of the array, but the print is not indented in accordance with the format, it looks very inconvenient.

A little trick is to use pre tags, such as:

Example code:

The page is displayed as follows:

Array [a] = > 1 [b] = > 2 [c] = > Array ([0] = > 1 [1] = > 2 [2] = > 3)) at this point, the study of "what is the pre of php" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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