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This article will explain in detail how to change the key name of an array in php. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

In php, you can use the array_combine () function to change the key of an array, which takes the value of one array as the key name of another array; the syntax "array_combine (key name array, original array)".

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

In php, you can use the array_combine () function to change the key of an array.

The array_combine () function creates a new array by merging two arrays, one of which is the key name and the other whose value is the key value.

With this feature, you can use the value of one array as the key name of another array.

Syntax:

Array_combine ($keys,$values)

$keys is required. Key name array.

$values is required. An array of key values.

Example:

Output result:

It is important to note that when creating an array using the array_combine () function, the number of elements in the $keys array and the $values array must be the same, so that the key name and key value correspond one to one, otherwise an error will be reported and FALSE will be returned.

This is the end of the article on "how to change the key name of an array in php". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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