array_chunk

PHP array_chunk()函數 (PHP array_chunk() Function)

array_chunk() function is an array function, it is used to split a given array in number of array (chunks of arrays).

array_chunk()函數是一個數組函數，用于將給定數組拆分為多個數組(數組塊)。

Syntax:

句法：

array_chunk(array_name, size, [preserve_keys]) : array

Here,

這里，

• array_name is the main array, which we have to convert into array chunks.

  array_name是主數組，我們必須將其轉換為數組塊。

• size is the number of arrays to be converted.

  size是要轉換的數組數。

• preserve_keys is an optional parameter and its default value is false. If it is true keys will be preserved and if it is “false” the keys of the arrays will be re-indexed in sub arrays.

  prepare_keys是一個可選參數，其默認值為false 。 如果為true，則將保留鍵，如果為“ false”，則將在子數組中重新索引數組的鍵。

It returns a multidimensional array.

它返回一個多維數組。

Examples:

例子：

Input:$arr = array("New Delhi", "Mumbai", "Chennai", "Pune", "Gwalior");Output:Array([0] => Array([0] => New Delhi[1] => Mumbai[2] => Chennai)[1] => Array([0] => Pune[1] => Gwalior))

PHP code 1:

PHP代碼1：

<?php$arr = array("New Delhi", "Mumbai", "Chennai", "Pune", "Gwalior");print ("Original array is...\n");print_r ($arr);$arr1 = array_chunk($arr, 3);print ("array (size: 3) is...\n");print_r ($arr1); ?>

Output 1

輸出1

Original array is... Array ([0] => New Delhi[1] => Mumbai[2] => Chennai[3] => Pune[4] => Gwalior ) array (size: 2) is... Array ([0] => Array([0] => New Delhi[1] => Mumbai[2] => Chennai)[1] => Array([0] => Pune[1] => Gwalior))

PHP Code 2: with preserved – "true"

PHP代碼2：保留-“ true”

<?php$arr = array("New Delhi", "Mumbai", "Chennai", "Pune", "Gwalior");print ("Original array is...\n");print_r ($arr);$arr1 = array_chunk($arr, 3, true);print ("array (size: 2) is...\n");print_r ($arr1); ?>

Output 2

輸出2

Original array is... Array ([0] => New Delhi[1] => Mumbai[2] => Chennai[3] => Pune[4] => Gwalior ) array (size: 2) is... Array ([0] => Array([0] => New Delhi[1] => Mumbai[2] => Chennai)[1] => Array([3] => Pune[4] => Gwalior))

See the output 1 & Output 2, in first output sub arrays are re-indexed while in output 2 arrays are not re-indexed.

參見輸出1和輸出2，在第一個輸出子數組中重新索引，而在輸出2數組中不重新索引。

翻譯自: https://www.includehelp.com/php/array_chunk-function-with-example.aspx

array_chunk

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