PHP函数在N个子数组中分配N个元素的数组 [英] PHP Function to devide an array of N elements in N sub array

问题描述

假设我有N个元素的数组。我想将其尽可能平均地划分为M个子数组，以形成M列。

Let say I have an array of N elements. I want to divide it as much as possible equally into M sub arrays to make M columns.

您知道如何在PHP中做到这一点吗？
我已经尝试过 array_chunk ，但这不是很

Do you know how I could do that in PHP ? I've tried array_chunk, but it's not quite what I'm looking for.

这是两个示例：

$array = range(1, 10);
$number_of_split = 3;

该数组应分为3个子数组，其中第一个子数组为4个元素，其他两个子数组为3个元素

The array should be split into 3 sub arrays of 4 elements for the first sub array and 3 elements for the two other sub arrays.

$array = range(1, 27);
$number_of_split = 5;

应将数组分为5个子数组，其中第一个两个子数组的元素为6个，其他三个数组的子元素为5个子数组。

The array should be split into 5 sub arrays of 6 elements for the two first sub arrays and 5 elements for the three other sub arrays.

推荐答案

请尝试从 php.net 。

function partition($list, $p) {
    $listlen = count($list);
    $partlen = floor($listlen / $p);
    $partrem = $listlen % $p;
    $partition = array();
    $mark = 0;
    for($px = 0; $px < $p; $px ++) {
        $incr = ($px < $partrem) ? $partlen + 1 : $partlen;
        $partition[$px] = array_slice($list, $mark, $incr);
        $mark += $incr;
    }
    return $partition;
}    

像这样使用：

$array = array();
$array = range(1, 10);
$number_of_split = 3;
$chunks = partition($array, $number_of_split);
print_r($chunks);

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