Universal two-dimensional array sorting algorithm functions

Universal two-dimensional array sorting algorithm functions

Reprint address: http://blog.qita.in /? Posting = 468 // Two-dimensional array sorting. $ arr indicates data, $ keys indicates the key value of sorting, $ order indicates sorting rules, 1 indicates ascending, and 0 indicates descending. Function array_sort ($ arr, $ keys, $ order = 0 ){ If (! Is_array ($ arr )){ Return false; } $ Keysvalue = array (); Foreach ($ arr as $ key => $ val ){ $ Keysvalue [$ key] = $ val [$ keys]; } If ($ order = 0 ){ Asort ($ keysvalue ); } Else { Arsort ($ keysvalue ); } Reset ($ keysvalue ); Foreach ($ keysvalue as $ key => $ vals ){ $ Keysort [$ key] = $ key; } $ New_array = array (); Foreach ($ keysort as $ key => $ val ){ $ New_array [$ key] = $ arr [$ val]; } Return $ new_array; } // Eg $ Arr = array ('0' => array ('a' => 2, 'B' => 4, 'C' => 3 ), '1' => array ('a' => 45, 'B' => 3, 'C' => 3 ), '2' => array ('a' => 2, 'B' => 7, 'C' => 3 ), ); $ New_array = array_sort ($ arr, 'A', 0 ); Print_r ($ new_array );