php使用array_chunk函数将一个数组分割成多个数组

$array = ['name' => 'tom', 'age' => 20, 3, 4, 5, 'a', 'b'];

$chunk_result = array_chunk($array, 3);

Array
(
 [0] => Array
  (
   [0] => tom
   [1] => 20
   [2] => 3
  )
 [1] => Array
  (
   [0] => 4
   [1] => 5
   [2] => a
  )
 [2] => Array
  (
   [0] => b
  )
)

$chunk_result = array_chunk($array, 3, true);

Array
(
 [0] => Array
  (
   [name] => tom
   [age] => 20
   [0] => 3
  )
 [1] => Array
  (
   [1] => 4
   [2] => 5
   [3] => a
  )
 [2] => Array
  (
   [4] => b
  )
)