array_chunk:将一个数组分解成包含多个一维数组的二维数组

1.php代码

$arr1 = ['a','b','c','d','e','f','g'];
$arr = array_chunk($arr1,3,true);
 
echo '<pre>';
print_r($arr);
 
result:
Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
            [2] => c
        )
 
    [1] => Array
        (
            [3] => d
            [4] => e
            [5] => f
        )
 
    [2] => Array
        (
            [6] => g
        )
 
)