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In this article Xiaobian for you to introduce in detail "php how to convert two-dimensional array to three-dimensional array", the content is detailed, the steps are clear, and the details are handled properly. I hope this "php how to transfer two-dimensional array to three-dimensional array" article can help you solve your doubts.

In php, you can use the array_chunk () function to convert a two-dimensional array into a three-dimensional array, which can split an array into multiple array blocks, only need to set the length of each new array block (number of elements) through the second parameter; syntax "array_chunk (two-dimensional array, integer value)".

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

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

The array_chunk () function splits an array into new array blocks.

By using this function, the array of each layer of the two-dimensional array can be divided (fractal dimension), and then converted into a three-dimensional array.

For example, there is a two-dimensional array:

$arr= array (array ("Zhang San", 25, "male"), array ("Li Si", 21, "male"), array ("Nana", 22, "female"), array ("Zhang San", 25, "male"), array ("Li Si", 21, "male"), array ("Nana", 22, "female"); echo "original 2D array:"; var_dump ($arr)

Convert a two-dimensional array to a three-dimensional array

Var_dump (array_chunk ($arr,1))

Var_dump (array_chunk ($arr,2))

Var_dump (array_chunk ($arr,3))

It can be seen that the number of elements in the third layer of the three-dimensional array varies with the value of the third parameter.

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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