PHP two-dimensional array sorted by a field (sort the query result set)

We often run into a sort of a key value based on a two-dimensional array, and then suddenly think of a function in the Onethink project, which is then drawn out as a reference. 2014-05-22 17::15 Read the comments of enthusiastic phper to add the following: PHP native Array_multisort () functions are recommended for faster execution and less reliance on custom functions The official document explanation is difficult to understand, the friend who does not understand can use Plain English explanation (Baidu know): Http://zhidao.baidu.com/link?url=Ljv-21fnK2CZkd03nPxb7uB7owjApdWilxZlmCcZKQqTB5AeI_ Bsdhyceiaa5gwl3o9xj2wtx8m65avjfmr9ck /** * Sort the query result set * http://www.onethink.cn */application/common/common/function.php * * @access Public * @param array $list Query results * @param string $field sorted field names * @param string $sortby Sort type (ASC forward sort desc Reverse sort Nat natural Sort) * @return Array */ if (! function_exists (' list_sort_by ')) { function list_sort_by ($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 sort Arsort ($refer); Break Case ' NAT '://Natural sort Natcasesort ($refer); Break } foreach ($refer as $key = $val) { $resultSet [] = & $list [$key]; } return $resultSet; } return false; } } Copy Code /** * Example * Request: According to the ID key values of the two-dimensional array in descending order (that is, the higher the ID of the row before)? */ $list = Array ( 0 = Array ( ' id ' = 1, ' Name ' = ' first ' ), 1 = Array ( ' id ' = 3, ' Name ' = ' third ' ), 2 = Array ( ' id ' = 2, ' Name ' = ' second ' ), 3 = Array ( ' id ' = 4, ' Name ' = ' IV ' ), ); Answer $new _list = list_sort_by ($list, ' id ', ' desc '); Copy Code

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