PHP multidimensional Array ordering Array_multisort () ____php

Array_multisort (Array_column ($tpldata, ' Time_stamp '), Sort_desc, $tpldata); Sort_desc Descending; Sort_asc Ascending time_stamp sort Field
multidimensional array sorting array_multisort () using PHP to sort with array_multisort functions <?php     $data = Array ();     $data [] = Array (' volume ' =>, ' Edition ' => 2);     $data [] = Array (' volume ' =>, ' edition ' => 1);     $data [] = Array (' volume ' =>, ' Edition ' => 6);     $data [] = Array (' volume ' =>, ' Edition ' => 2);     $data [] = Array (' volume ' =>, ' Edition ' => 6);     $data [] = Array (' volume ' =>, ' edition ' => 7);    //Get List of columns     foreach ($data as $key => $row)     {         $volume [$key]  = $row [' volume '];         $edition [$key] = $row [' Edition '];    }     Array_multisort ($volume, Sort_desc, $edition, SORT_ASC, $data);     Print_r ($data);?> output Result: Copy code   Code as follows: Array (    [0] => array   &nb sp;   &nbsp (            [Volume] =>              [Edition] => 2        )      [1] => Array         (             [Volume] =>             [ Edition] => 1             [2] => Array          (            [Volume] => 86             [Edition] => 6         )     [3] => Array         (             [Volume] =>             [Edition] => 6        )      [4] => Array         (             [Volume] =>             [ Edition] => 2             [5] => Array          (            [volume] => 67             [Edition] => 7         ) about Array_multisort official documentation also has a more detailed description: http://www.php.net/manual/zh/function.array-multisort.php Two, custom function sort 1Copy code code as follows:
<?php     $data = Array ();     $data [] = Array (' volume ' =>, ' Edition ' => 2);     $data [] = Array (' volume ' =>, ' edition ' => 1);     $data [] = Array (' volume ' =>, ' Edition ' => 6);     $data [] = Array (' volume ' =>, ' Edition ' => 2);     $data [] = Array (' volume ' =>, ' Edition ' => 6);     $data [] = Array (' volume ' =>, ' edition ' => 7);    //Get List of columns     foreach ($data as $key => $row)     {         $volume [$key]  = $row [' volume '];         $edition [$key] = $row [' Edition '];    }     $ret = ArraySort ($data, ' volume ', ' desc ');     Print_r ($ret);    /**      * @desc arraysort php two-dimensional array sort According to the specified key array      * Param ARRAY $arr the array that will be sorted      * @param string $keys Specifies the key      * @param string $type sort type ASC | Desc      * @return array     /    function ArraySort ($arr, $ Keys, $type = ' asc ') {        $keysvalue = $new _array = Array (); &NBSP;&NBSP;&NBSP;&N bsp;    foreach ($arr as $k => $v) {             $keysvalue [$k] = $v [$keys];        }         $type = = ' ASC '? Asort ($keysvalue): Arsort ($keysvalue);         Reset ($keysvalue);         foreach ($keysvalue as $k => $v) {      & nbsp;    $new _array[$k] = $arr [$k];        }         return $new _array;    }?>
Output Result: Copy code   code as follows: Array (    [3] => Array         ( &nbs p;          [Volume] =>              [Edition] => 2        )     [4] = > Array         (             [Volume] =>             [Edition] => 6 & nbsp;      )     [1] => Array          (            [volume] =>              [Edition] => 1        )     [2] => Array         (            [Volume] =>              [Edition] => 6        )      [5] => Array         (             [Volume] =>             [Edition] = > 7        )     [0] => Array      & nbsp;  (            [volume] =>              [Edition] => 2         ) One of the differences between this custom function and the system function is that the custom function only supports sorting for a key, and it needs to be executed multiple times to support the ordering of multiple key keys; and system function Array_multisort can be one-time to multiple keys and can specify more than one collation, system function is quite powerful, recommend the use of system functions, BI