Sort multidimensional Arrays in PHP ASC by String element

Question

I have an array like this:

array (size=3)
  4 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'z' (length=4)
  5 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'a' (length=4)
  9 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'd' (length=4)

And i have to sort this array ascending by name! The goal is, to make the array to the following structure:

array (size=3)
  5 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'a' (length=4)
  9 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'd' (length=4)
  4 => 
    array (size=3)
      'id' => int 4
      'parentId' => int 3
      'name' => string 'z' (length=4)

Do you guys have any smart solutions? I've tried to save the keys and the name belongs to the key in a new array, and iterate the ksort'ed array once again, and set the new position:

    // Placeholder
    $categoryContainer = array();

    // Iterate all categories
    foreach(self::$categories as $key => $category) {
        $categoryContainer[$category['name']] = $key;
    }

    // Resort by key (category name!)
    ksort($categoryContainer);

score 2 · Accepted Answer · answered Apr 16 '15 at 08:53

2

You can use usort http://php.net/manual/en/function.usort.php

function cmp($a, $b)
{
    if ($a == $b) {
        return 0;
    }
    return ($a['name'] < $b['name']) ? -1 : 1;
}

usort($array, "cmp");

answered Apr 16 '15 at 08:53

Mex

1,011
7
16

2

`uasort($array, function ($a, $b) { return strcmp($a['name'], $b['name']); })` – deceze Apr 16 '15 at 09:04
Made it, very appreciated! – Tyralcori Apr 16 '15 at 09:10

Sort multidimensional Arrays in PHP ASC by String element

1 Answers1