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

Php modifies array keys. Modification method: 1, with the "array_values (array)" statement, you can change the string keys in the array into numeric keys; 2, with "array_combine (key name array, original array)", you can replace the keys of the original array with the elements in the key name array, and the number of elements in the key name array and the original array must be the same.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php can modify array keys. The modification method is as follows:

1. Use the array_values () function

The array_values () function converts an associative array into an indexed array, changing the string keys in the array to numeric keys.

2. Use the array_combine () function

The array_combine () function creates a new array by merging two arrays, one of which is the key name and the other is the key value. The number of elements in the key name array and the key value array must be the same.

That is, this function replaces the key of the original array with an element in the array of key names.

Example:

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