php - PHP:根据另一个数组的值将一个数组拆分为不同大小的 block

Question

是否有一种巧妙的方法可以根据另一个数组的长度将数组拆分为多个块？

$start = range(0,30);
$length = array(3,7,2,12,6);

$target = array([0]=>array(0,1,2),
                [1]=>array(4,5,6,7,8,9,10),
                [2]=>array(11,12),
                [3]=>array(13,14,15,16,17,18,19,20,21,22,23,24),
                [4]=>array(25,26,27,28,29,30));

Answer 1

使用 array_splice :

$target = array(); // or use []  in PHP 5.4
foreach($length as $i) {
    $target[] = array_splice($start, 0, $i);
}

Try it.

请注意，这会更改$start!