array_chunk(input,size,bool)数组分块

<?php
$input_array = array('a','b','c','d','e');
print_r(array_chunk($input_array,2));
print_r(array_chunk($input_array,2,true));
Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
        )

    [1] => Array
        (
            [0] => c
            [1] => d
        )

    [2] => Array
        (
            [0] => e
        )

)
Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
        )

    [1] => Array
        (
            [2] => c
            [3] => d
        )

    [2] => Array
        (
            [4] => e
        )

)