Detailed explanation of PHP multidimensional array sorting-PHP Tutorial-php.cn

Detailed explanation of PHP multidimensional array sorting

墨辰丷

Release： 2023-03-26 08:28:01

Original

2290 people have browsed it

This article mainly introduces the relevant information of PHP multi-dimensional array sorting array in detail, which has certain reference value. Interested friends can refer to

PHP array Array sorting by fields

  /**
   * Sort array by filed and type, common utility method.
   * @param array $data
   * @param string $sort_filed
   * @param string $sort_type SORT_ASC or SORT_DESC
   */
  public function sortByOneField($data, $filed, $type)
  {
    if (count($data) <= 0) {
      return $data;
    }
    foreach ($data as $key => $value) {
      $temp[$key] = $value[$filed];
    }
    array_multisort($temp, $type, $data);
    return $data;
  }

Copy after login

PHP array Array is sorted two-dimensionally, first by the first field, and then by the second field

  /**
   * Sort array by filed and type, common utility method.
   * @param array $array
   * @param string $filed1
   * @param string $type1 SORT_ASC or SORT_DESC
   * @param string $filed2
   * @param string $type2 SORT_ASC or SORT_DESC
   */
  public function sortByTwoFiled($data, $filed1, $type1, $filed2, $type2)
  {
    if (count($data) <= 0) {
      return $data;
    }
    foreach ($data as $key => $value) {
      $temp_array1[$key] = $value[$filed1];
      $temp_array2[$key] = $value[$filed2];
    }
    array_multisort($temp_array1, $type1, $temp_array2, $type2, $data);
    return $users;
  }

Copy after login

sortMultiArray() supports up to 3-dimensional array sorting. Of course, it can be expanded. Custom method overloading implements sorting of multi-dimensional numbers. Multi-dimensional here refers to multiple fields of data.

Usage:

1. sortMultiArray（$data, ['score' => SORT_DESC])

2. sortMultiArray（$data, ['score' = > SORT_DESC, 'count' => SORT_ASC])

3. sortMultiArray($data, ['score' => SORT_DESC, 'count' => SORT_ASC, 'name' => SORT_ASC ])

/**
   * Sort multi array by filed and type.
   * @param data $array
   * @param condition $array
   */
  public function sortMultiArray(&$data, $condition)
  {
    if (count($data) <= 0 || empty($condition)) {
      return $data;
    }
    $dimension = count($condition);
    $fileds = array_keys($condition);
    $types = array_values($condition);
    switch ($dimension) {
      case 1:
        $data = $this->sort1Dimension($data, $fileds[0], $types[0]);
        break;
      case 2:
        $data = $this->sort2Dimension($data, $fileds[0], $types[0], $fileds[1], $types[1]);
        break;
      default:
        $data = $this->sort3Dimension($data, $fileds[0], $types[0], $fileds[1], $types[1], $fileds[2], $types[2]);
        break;
    }
    return $data;
  }

  public function sort1Dimension(&$data, $filed, $type)
  {
    if (count($data) <= 0) {
      return $data;
    }
    foreach ($data as $key => $value) {
      $temp[$key] = $value[$filed];
    }
    array_multisort($temp, $type, $data);
    return $data;
  }

  public function sort2Dimension(&$data, $filed1, $type1, $filed2, $type2)
  {
    if (count($data) <= 0) {
      return $data;
    }
    foreach ($data as $key => $value) {
      $sort_filed1[$key] = $value[$filed1];
      $sort_filed2[$key] = $value[$filed2];
    }
    array_multisort($sort_filed1, $type1, $sort_filed2, $type2, $data);
    return $data;
  }

  public function sort3Dimension(&$data, $filed1, $type1, $filed2, $type2, $filed3, $type3)
  {
    if (count($data) <= 0) {
      return $data;
    }
    foreach ($data as $key => $value) {
      $sort_filed1[$key] = $value[$filed1];
      $sort_filed2[$key] = $value[$filed2];
      $sort_filed3[$key] = $value[$filed3];
    }
    array_multisort($sort_filed1, $type1, $sort_filed2, $type2, $sort_filed3, $type3, $data);
    return $data;
  }

Copy after login

Related recommendations:

Analysis of multi-dimensional array sorting algorithm implemented in PHP

Detailed explanation of PHP multi-dimensional array sorting example

php uses usort, uasort function to implement multi-dimensional array sorting detailed explanation

The above is the detailed content of Detailed explanation of PHP multidimensional array sorting. For more information, please follow other related articles on the PHP Chinese website!