Sorting Nested Associative Arrays : PHP

foreach ($a as $key => $value) {
  if (is_array($value)) {
    sortNestedArrayAssoc($value);
  }
}

Furthermore, the recursive sorting has to be applied to the right variable, the array element that itself is an array. Make sure that this is passed via reference, so that the changes are applied back to the value.

Sorting a Nested Associative Array Using a Recursive Function

<pre>
<?php
  function sortNestedArrayAssoc($a) {
    ksort($a);
    foreach ($a as $key => $value) {
      if (is_array($value)) {
        sortNestedArrayAssoc($value);
      }
    }
  }
  $arr = array(
    'Roman' =>
      array('one' => 'I', 'two' => 'II', 'three' =>
        'III', 'four' => 'IV'),
    'Arabic' =>
      array('one' => '1', 'two' => '2', 'three' =>
        '3', 'four' => '4')
  );
  sortNestedArrayAssoc(&$arr);
  print_r($arr);
?>
</pre>

Figure shows the result of the code at the beginning of This.

Sorting a Nested Associative Array Using a Recursive Function

Sorting nested, associative arrays.