Question

I looked around for a solution, both on Google and SO, but it’s pretty late, so apologies if I’m missing something really obvious.

In PHP, I have an array set up, $rooms, such that it looks like:

Array
(
  [0] => Array
  (
    [title] => Bedroom
    [area] => 16.00
    [length] => 4.00
    [width] => 4.00
    [level] => U
  )
  [1] => Array
  (
    [title] => Kitchen
    [area] => 18.00
    [length] => 2.00
    [width] => 9.00
    [level] => 1
  )
  [2] => Array
  (
    [title] => Basement
    [area] => 32.00
    [length] => 8.00
    [width] => 4.00
    [level] => 2
  )
  [3] => Array
  (
    [title] => Bathroom
    [area] => 9.00
    [length] => 3.00
    [width] => 3.00
    [level] => L
  )
  [3] => Array
  (
    [title] => Deck
    [area] => 9.00
    [length] => 3.00
    [width] => 3.00
    [level] => n/a
  )
)

I’m wanting to group the entries with the same level keys (I.e., “sort them so they’re together”). However, I also need the level groups to be in the following order: 1, n/a, 2, 3, 4, (and on), U, L, B

I figure I need to use uasort();, but I just can’t wrap my head around the examples.

Any help? Many thanks!

Answer 1

Try with:

$data      = array();
$output    = array();
$levelSort = array('1', 'n/a', '2', '3', '4', '(and on)', 'U', 'L', 'B');

foreach ( $rooms as $room ) {
  if ( empty($data[$room['level']]) ) {
    $data[$room['level']] = array();
  }

  $data[$room['level']][] = $room;
}

foreach ( $levelSort as $level ) {
  $levelData = !empty($data[$level]) ? $data[$level] : array();
  $output    = array_merge($output, $levelData);
}

var_dump($output);