How to Sort a Multi-dimensional Array by Value

by

Try a usort. If you are still on PHP 5.2 or earlier, you’ll have to define a sorting function first:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero – best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() – see comparison of array sorting functions in the manual.

Related Contents:

  1. Sort array of objects by one property
  2. How to sort an array of associative arrays by value of a given key in PHP?
  3. Sort multidimensional array by multiple columns
  4. Sorting a php array of arrays by custom order
  5. Sort an array of associative arrays by column value
  6. How do I sort a PHP array by an element nested inside? [duplicate]
  7. usort sorting multiple fields
  8. PHP multidimensional array search by value
  9. How to Flatten a Multidimensional Array?
  10. How can I sort arrays and data in PHP?
  11. in_array() and multidimensional array
  12. How do I Sort a Multidimensional Array in PHP [duplicate]
  13. Sort an Array by keys based on another Array?
  14. Checking if array is multidimensional or not?
  15. How to sum all column values in multi-dimensional array?
  16. Using usort in php with a class private function
  17. PHP best way to MD5 multi-dimensional array?
  18. PHP Sort a multidimensional array by element containing Y-m-d H:i:s date
  19. PHP Sort Array By SubArray Value
  20. PHP combine two associative arrays into one array
  21. How to “flatten” a multi-dimensional array to simple one in PHP? [duplicate]
  22. How to access first level keys of a 2d array with a foreach loop? [duplicate]
  23. PHP – Merging two arrays into one array (also Remove Duplicates)
  24. Loop a multidimensional array and only print two specific column values per row
  25. Custom key-sort a flat associative based on another array
  26. PHP sort array by two field values [duplicate]
  27. “Array to string conversion error” when calling array_diff_assoc() with a multidimensional array
  28. How to check if a specific value exists at a specific key in any subarray of a multidimensional array?
  29. Find a matching or closest value in an array
  30. PHP: Get key from array?
  31. Group rows in an associative array of associative arrays by column value and preserve the original first level keys
  32. Sorting an associative array in PHP [duplicate]
  33. How do I move an array element with a known key to the end of an array in PHP?
  34. glob() – sort array of files by last modified datetime stamp
  35. PHP Get Highest Value from Array
  36. PHP Sort array by field? [duplicate]
  37. Turning multidimensional array into one-dimensional array [duplicate]
  38. Sum values of multidimensional array by key without loop
  39. Remove duplicated elements of associative array in PHP
  40. Delete element from multidimensional-array based on value
  41. Sort array by value alphabetically php
  42. PHP order array by date? [duplicate]
  43. How to filter an associative arrays using keys of an indexed array in PHP?
  44. Which is a better way to check if an array has more than one element?
  45. How to transform array to comma separated words string? [duplicate]
  46. How to get a form input array into a PHP array
  47. Shorthand for arrays: is there a literal syntax like {} or []?
  48. How to remove a variable from a PHP session array
  49. Can you add an if statement in ORDER BY?
  50. How to convert an array to a string in PHP?

Leave a Comment