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How to save original unique array keys when using array_chunk?

I have an array of objects, each of which has a unique random identifier.

111 => 
    object(stdClass)[452]
      public 'Description' => string 'Description here...' (length=728)       
      public 'Name' => string 'Shirt' (length=18)
      public 'Price' => float 36.56

222 => 
    object(stdClass)[452]
      public 'Description' => string 'Description here...' (length=728)       
      public 'Name' => string 'Pants' (length=18)
      public 'Price' => float 36.56

333 => 
    object(stdClass)[452]
      public 'Description' => string 'Description here...' (length=728)       
      public 'Name' => string 'Dress' (length=18)
      public 'Price' => float 36.56

444 => 
    object(stdClass)[452]
      public 'Description' => string 'Description here...' (length=728)       
      public 'Name' => string 'Dress' (length=18)
      public 'Price' => float 36.56

...

My goal is to split my arrays with object keys into pieces 2 for pagination purposes. So something like this:

0 =>
    111 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)           
          public 'Name' => string 'Shirt' (length=18)
          public 'Price' => float 36.56

    222 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)           
          public 'Name' => string 'Pants' (length=18)
          public 'Price' => float 36.56
1 =>
    333 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)           
          public 'Name' => string 'Dress' (length=18)
          public 'Price' => float 36.56

    444 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)          
          public 'Name' => string 'Dress' (length=18)
          public 'Price' => float 36.56
...

My problem is to use array_chunk()to separate arrays of objects into groups of 2, my unique identifier is not saved.

private function paginate($array)
{
    $chunks = 2;
    $paginatedResults = array_chunk($array, $chunks);

    return $paginatedResults;
}

Function output:

0 =>
    0 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)
          public 'Name' => string 'Shirt' (length=18)
          public 'Price' => float 36.56

    1 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)
          public 'Name' => string 'Pants' (length=18)
          public 'Price' => float 36.56
1 =>
    0 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)
          public 'Name' => string 'Dress' (length=18)
          public 'Price' => float 36.56

    1 => 
        object(stdClass)[452]
          public 'Description' => string 'Description here...' (length=728)
          public 'Name' => string 'Dress' (length=18)
          public 'Price' => float 36.56
...

How can I split my array with a key into another array containing 2 objects per index, keeping my original array keys containing a unique identifier?

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2 answers

, , array_chunk() true :

$paginatedResults = array_chunk($array, $chunk, true);
+16

array array_chunk ( $input, int $size [, bool $preserve_keys = false]) .

<?php
$x = array_flip(range('a','j'));
var_dump($x);
var_dump(array_chunk($x, 3, true));


array(10) {
  ["a"]=>
  int(0)
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
  ["d"]=>
  int(3)
  ["e"]=>
  int(4)
  ["f"]=>
  int(5)
  ["g"]=>
  int(6)
  ["h"]=>
  int(7)
  ["i"]=>
  int(8)
  ["j"]=>
  int(9)
}
array(4) {
  [0]=>
  array(3) {
    ["a"]=>
    int(0)
    ["b"]=>
    int(1)
    ["c"]=>
    int(2)
  }
  [1]=>
  array(3) {
    ["d"]=>
    int(3)
    ["e"]=>
    int(4)
    ["f"]=>
    int(5)
  }
  [2]=>
  array(3) {
    ["g"]=>
    int(6)
    ["h"]=>
    int(7)
    ["i"]=>
    int(8)
  }
  [3]=>
  array(1) {
    ["j"]=>
    int(9)
  }
}
+5

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