PHP如何将数组按12个元素分组并适配任意长度？

Oh, this is a perfect use case for PHP's built-in array_chunk() function—it’s designed exactly for splitting arrays into chunks of a specified size, and it handles any array length automatically, including when the total number of elements isn’t a multiple of your chunk size.

Here's how to implement it: #

First, start with your original array:

$array = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm'];

Then use array_chunk() to split it into groups of 12 elements:

$rows = array_chunk($array, 12);

What this does: #

• The first parameter is your target array.
• The second parameter is the size of each chunk (12 in this case).
• The optional third parameter (default is false) lets you preserve the original array's keys if needed—for most indexed arrays like your example, you can leave this out.

Result: #

If you print the $rows array, you’ll get exactly what you’re looking for:

// $rows[0] = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l'];
// $rows[1] = ['m'];

It works for any array length: #

• If your array has 24 elements, you’ll get two chunks of 12.
• If it has 15 elements, you’ll get one chunk of 12 and one chunk of 3.
• If it has fewer than 12 elements, you’ll get a single chunk with all the elements.

This function is efficient, clean, and requires no manual looping or counting—PHP handles all the heavy lifting for you.

内容的提问来源于stack exchange，提问作者Juan José González