PHP Two-dimensional arrays are sorted according to a field

Original: PHP two-dimensional array sorted by a field

Requirements: Fetch the respective 4 data from two different tables, then consolidate (Array_merge) into an array, then sort the first 4 according to the data creation time in descending order.

It is not an ORDER by problem that can be solved when this requirement is met. So look at the PHP manual to find the following method, make this note.

<?PHP/** * The two-dimensional array is sorted according to a field * function: Sort by user's age in reverse order * @author Ruxing.li*/Header(' content-type:text/html; Charset=utf-8 ');$arrUsers=Array(    Array(            ' id ' = 1, ' name ' = ' Zhang San ', ' age ' = 25,    ),Array(            ' id ' = 2, ' name ' = ' John Doe ', ' age ' = 23,    ),Array(            ' id ' = 3, ' name ' = ' Harry ', ' age ' = 40,    ),Array(            ' id ' = 4, ' name ' = ' Zhao Liu ', ' age ' = 31,    ),Array(            ' id ' = 5, ' name ' = ' Yellow seven ', ' age ' = 20,    ),); $sort=Array(        ' Direction ' = ' sort_desc ',//sort order flag Sort_desc descending; SORT_ASC Ascending' Field ' = ' age ',//Sort Fields);$arrSort=Array();foreach($arrUsers  as $uniqid=$row){    foreach($row  as $key=$value){        $arrSort[$key][$uniqid] =$value; }}if($sort[' Direction ']){    Array_multisort($arrSort[$sort[' Field '],constant($sort[' direction ']),$arrUsers);}Var_dump($arrUsers);/*output: Array (size=5) 0 = = Array (size=3) ' id ' + = int 5 ' name ' = = String ' Yellow Seven ' (length=6) ' A GE ' = = int 1 = array (size=3) ' id ' + = int 2 ' name ' = ' John Doe ' (length=6) ' Age ' =&G T  int 2 = = Array (size=3) ' id ' + int 1 ' name ' = = String ' Zhang San ' (length=6) ' age ' = int 25 3 = = Array (size=3) ' id ' = = int 4 ' name ' = = String ' Zhao Liu ' (length=6) ' age ' = int 4 =>     ; Array (size=3) ' id ' + = int 3 ' name ' + = String ' Harry ' (length=6) ' age ' = int*/

PHP Two-dimensional arrays are sorted according to a field