How to convert one-dimensional array to two-dimensional array by php

Php how to change one-dimensional array to two-dimensional array, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

In php, you can use the array_chunk () function to convert an one-dimensional array into a two-dimensional array, which is used to split an array into multiple array blocks; the syntax format is "array_chunk ($arr,count ($arr) / 2)".

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

In php, you can use the array_chunk () function to convert an one-dimensional array to a two-dimensional array.

Example:

Description:

The array_chunk () function splits an array into multiple array blocks with the following syntax:

Array array_chunk (array $arr, int $size [, bool $preserve_keys = false])

Parameter description:

Arr represents the array to be split

Size represents the number of elements of the split subarray

Preserve_keys indicates whether to keep the original key name in the arr array, which defaults to false, that is, it is not retained, and each subarray after split will use a new numeric index starting at 0; if set to true, the original key name in arr will be retained.

Array_chunk () splits the arr array into multiple subarrays, and the number of elements in each subarray is determined by size. The number of elements in the last subarray may be less than size.

Return value: returns a multi-dimensional array of split subarrays.

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