How to divide an array into multiples of 2 php

Question

I'm trying to divide an array into a multiple-dimensional array with 2 'elements' in each contained array.

So far I've only been able to divide them into a specified number of chunks, but as the number of elements are determined from a foreach loop and call to the database, I'm struggling to divide them into multiples of 2.

foreach ($_POST as $key)
{
    $data[] = $key;
}

echo '<pre>';
  print_r(partition($data, $i));
echo '</pre>';



function partition(Array $list, $p) 
{
  $listlen = count($list);
  $partlen = floor($listlen / $p);
  $partrem = $listlen % $p;
  $partition = array();
  $mark = 0;

  for($px = 0; $px < $p; $px ++)
  {
    $incr = ($px < $partrem) ? $partlen + 1 : $partlen;
    $partition[$px] = array_slice($list, $mark, $incr);
    $mark += $incr;
  }

  return $partition;
}

The desired output would be like this ...

Array
(
  [0] => Array
  (
     [0] => img.jpg
     [1] => http://google.com
  )
  [1] => Array
  (
     [0] => img.jpg
     [1] => http://google.com
  )
  [2] => Array
  (
     [0] => img.jpg
     [1] => http://google.com
  )
)

Any help would be appreciated.

Thanks

it would be useful if you added a simple example of at least the expected result — Kaddath
– Kaddath, Commented Oct 13, 2017 at 8:08

Neodan · Accepted Answer · 2017-10-13 08:17:15Z

3

Just use the array_chunk function (-;

Example:

<?php
print_r(array_chunk($data, 2));

edited Oct 13, 2017 at 8:17

answered Oct 13, 2017 at 8:12

Neodan

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Comments

Chetan Ameta · Accepted Answer · 2017-10-13 08:16:15Z

1

Try array_chunk

see below solution:

foreach (range(1, 10) as $key)
{
    $data[] = $key;
}
$i = 2;
echo '<pre>';
print_r(partition($data, $i));
echo '</pre>';

function partition(Array $list, $p)
{
    $partition = array_chunk($list, $p, true);

    return $partition;
}

Output:

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
        )

    [1] => Array
        (
            [2] => 3
            [3] => 4
        )

    [2] => Array
        (
            [4] => 5
            [5] => 6
        )

    [3] => Array
        (
            [6] => 7
            [7] => 8
        )

    [4] => Array
        (
            [8] => 9
            [9] => 10
        )

)

answered Oct 13, 2017 at 8:16

Chetan Ameta

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Comments

Xyz · Accepted Answer · 2017-10-13 08:14:49Z

0

array_chunk does this for you.

foreach ($_POST as $key)
{
    $data[] = $key;
}
var_dump(array_chunk($data, 2));

answered Oct 13, 2017 at 8:14

Xyz

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