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class SortArray in Service Container 7

Same name and namespace in other branches
  1. 7.2 lib/Drupal/Component/Utility/SortArray.php \Drupal\Component\Utility\SortArray

Provides generic array sorting helper methods.

Hierarchy

Expanded class hierarchy of SortArray

File

lib/Drupal/Component/Utility/SortArray.php, line 15
Contains \Drupal\Component\Utility\SortArray.

Namespace

Drupal\Component\Utility
View source
class SortArray {

  /**
   * Sorts a structured array by the 'weight' element.
   *
   * Note that the sorting is by the 'weight' array element, not by the render
   * element property '#weight'.
   *
   * Callback for uasort().
   *
   * @param array $a
   *   First item for comparison. The compared items should be associative
   *   arrays that optionally include a 'weight' element. For items without a
   *   'weight' element, a default value of 0 will be used.
   * @param array $b
   *   Second item for comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByWeightElement(array $a, array $b) {
    return static::sortByKeyInt($a, $b, 'weight');
  }

  /**
   * Sorts a structured array by '#weight' property.
   *
   * Callback for uasort().
   *
   * @param array $a
   *   First item for comparison. The compared items should be associative
   *   arrays that optionally include a '#weight' key.
   * @param array $b
   *   Second item for comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByWeightProperty($a, $b) {
    return static::sortByKeyInt($a, $b, '#weight');
  }

  /**
   * Sorts a structured array by 'title' key (no # prefix).
   *
   * Callback for uasort().
   *
   * @param array $a
   *   First item for comparison. The compared items should be associative arrays
   *   that optionally include a 'title' key.
   * @param array $b
   *   Second item for comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByTitleElement($a, $b) {
    return static::sortByKeyString($a, $b, 'title');
  }

  /**
   * Sorts a structured array by '#title' property.
   *
   * Callback for uasort().
   *
   * @param array $a
   *   First item for comparison. The compared items should be associative arrays
   *   that optionally include a '#title' key.
   * @param array $b
   *   Second item for comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByTitleProperty($a, $b) {
    return static::sortByKeyString($a, $b, '#title');
  }

  /**
   * Sorts a string array item by an arbitrary key.
   *
   * @param array $a
   *   First item for comparison.
   * @param array $b
   *   Second item for comparison.
   * @param string $key
   *   The key to use in the comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByKeyString($a, $b, $key) {
    $a_title = is_array($a) && isset($a[$key]) ? $a[$key] : '';
    $b_title = is_array($b) && isset($b[$key]) ? $b[$key] : '';
    return strnatcasecmp($a_title, $b_title);
  }

  /**
   * Sorts an integer array item by an arbitrary key.
   *
   * @param array $a
   *   First item for comparison.
   * @param array $b
   *   Second item for comparison.
   * @param string $key
   *   The key to use in the comparison.
   *
   * @return int
   *   The comparison result for uasort().
   */
  public static function sortByKeyInt($a, $b, $key) {
    $a_weight = is_array($a) && isset($a[$key]) ? $a[$key] : 0;
    $b_weight = is_array($b) && isset($b[$key]) ? $b[$key] : 0;
    if ($a_weight == $b_weight) {
      return 0;
    }
    return $a_weight < $b_weight ? -1 : 1;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
SortArray::sortByKeyInt public static function Sorts an integer array item by an arbitrary key.
SortArray::sortByKeyString public static function Sorts a string array item by an arbitrary key.
SortArray::sortByTitleElement public static function Sorts a structured array by 'title' key (no # prefix).
SortArray::sortByTitleProperty public static function Sorts a structured array by '#title' property.
SortArray::sortByWeightElement public static function Sorts a structured array by the 'weight' element.
SortArray::sortByWeightProperty public static function Sorts a structured array by '#weight' property.