PHP implements a method of ordering a key in a two-dimensional array _php tips

The example in this article describes a method that PHP implements to sort a key in a two-dimensional array. Share to everyone for your reference, specific as follows:

/** * Sorting Query result set * @access public * @param array $list Query results * @param string $field sorted field name * @param string $sortby sort Type (ASC forward sort desc Reverse sort Nat natural Sort) * @return Array */function list_sort_by ($list, $field, $sortby = ' asc ') {if is_
      Array ($list)) {$refer = $resultSet = Array ();
      foreach ($list as $i => $data) {$refer [$i] = & $data [$field];
          Switch ($sortby) {case ' ASC '://forward sort asort ($refer);
        Break
          Case ' desc '://reverse order Arsort ($refer);
        Break
          Case ' NAT '://Natural sort natcasesort ($refer);
      Break
      foreach ($refer as $key => $val) {$resultSet [] = & $list [$key];
    return $resultSet;
  return false;
 /** * Example * ask: in descending order of the ID key value of a two-dimensional array (i.e., the larger the ID)? */$list = Array (0 => array (' ID ' => 1, ' name ' => ' first '), 1 => array (' ID ' => 3, ' NA Me ' => ' third '), 2=> Array (' ID ' => 2, ' name ' => ' second '), 3 => array (' ID ' => 4, ' name ' => ' four '),);
Solution $new _list = list_sort_by ($list, ' id ', ' desc ');

 Print_r ($new _list);

The results of the operation are as follows:

Array
(
  [0] => array
    (
      [id] => 4
      [name] => fourth
    )
  [1] => array
    (
      [id] = > 3
      [name] => third
    )
  [2] => Array
    (
      [id] => 2
      [name] => second
    )
  [3] =& Gt Array
    (
      [id] => 1
      [name] => first
    )
)

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I hope this article will help you with the PHP program design.