具有通用性二维数组排序算法函数

转载地址： http://blog.qita.in/?post=468

1. //二维数组排序， $arr是数据，$keys是排序的健值，$order是排序规则，1是升序，0是降序
3. function array_sort($arr, $keys, $order=0) {
5. if (!is_array($arr)) {
7. return false;
9. }
11. $keysvalue = array();
13. foreach($arr as $key => $val) {
15. $keysvalue[$key] = $val[$keys];
17. }
19. if($order == 0){
21. asort($keysvalue);
23. }else {
25. arsort($keysvalue);
27. }
29. reset($keysvalue);
31. foreach($keysvalue as $key => $vals) {
33. $keysort[$key] = $key;
35. }
37. $new_array = array();
39. foreach($keysort as $key => $val) {
41. $new_array[$key] = $arr[$val];
43. }
45. return $new_array;
47. }
49. //eg
50. $arr = array('0'=>array('a'=>2,'b'=>4,'c'=>3),
51. '1'=>array('a'=>45,'b'=>3,'c'=>3),
52. '2'=>array('a'=>2,'b'=>7,'c'=>3),
53. );
54. $new_array = array_sort($arr,'a',0);
55. print_r($new_array);

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