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This article will explain in detail how to set the array key names in php. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

Php array key name setting method: 1, create a PHP sample file; 2, define an array; 3, use foreach to traverse array elements; 4, modify array key name and re-assign values in foreach.

This article operating environment: windows7 system, PHP7.1 version, Dell G3 computer.

How to set the key name of php array? Add characters to the array key name

Create a new php file, named test.php, to explain how php adds characters to array key names.

In the test.php file, use the header () method to set the encoding format of the page to utf-8.

In the test.php file, define an array for testing.

In the test.php file, use foreach to traverse the array elements, add an underscore to the array key name and reassign it in foreach, and use the unset function to delete the array element value corresponding to the original key name.

In the test.php file, use print_r to output the processed array.

Open the test.php file in a browser and view the results.

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