1. 對數組$array重組：
4. $array = array(
5. array(‘id‘=>1,‘name‘=>‘aa‘,‘pwd‘=>‘12‘),
6. array(‘id‘=>1,‘name‘=>‘bb‘,‘pwd‘=>‘56‘),
7. array(‘id‘=>1,‘name‘=>‘saa‘,‘pwd‘=>‘89‘),
9. array(‘id‘=>2,‘name‘=>‘cc‘,‘pwd‘=>‘78‘)
10. );
11. 實現代碼如下：
13. $tmpArray = array();
14. foreach ($array as $row) {
16. $key = $row[‘id‘];
17. if (array_key_exists($key, $tmpArray)) {
18. //$tmpArray[$key][‘pwd‘] = $tmpArray[$key][‘pwd‘] . ‘,‘ . $row[‘pwd‘]; //用這句的話下面有關pwd的條件語句都要刪掉，實現其字符串形式
19. if (is_array($tmpArray[$key][‘name‘])) {
20. $tmpArray[$key][‘name‘][] = $row[‘name‘];
21. } else {
22. $tmpArray[$key][‘name‘] = array($tmpArray[$key][‘name‘], $row[‘name‘]);
23. }
24. if (is_array($tmpArray[$key][‘pwd‘])) {
25. $tmpArray[$key][‘pwd‘][] = $row[‘pwd‘];
26. } else {
27. $tmpArray[$key][‘pwd‘] = array($tmpArray[$key][‘pwd‘], $row[‘pwd‘]);
28. }
29. } else {
30. $tmpArray[$key] = array(‘id‘=>$row[‘id‘],‘name‘=>array($row[‘name‘]),‘pwd‘=>array($row[‘pwd‘])); //此句要註意，可設置
31. // $tmpArray[$key] = $row; // 有字段相加時可能會代替上面一句
32. }
33. }
35. echo "<pre>";
36. var_dump($tmpArray);
38. 打印結果為：
40. array (size=2)
41. 1 =>
42. array (size=3)
43. ‘id‘ => int 1
44. ‘name‘ =>
45. array (size=3)
46. 0 => string ‘aa‘ (length=2)
47. 1 => string ‘bb‘ (length=2)
48. 2 => string ‘saa‘ (length=3)
49. ‘pwd‘ =>
50. array (size=3)
51. 0 => string ‘12‘ (length=2)
52. 1 => string ‘56‘ (length=2)
53. 2 => string ‘89‘ (length=2)
54. 2 =>
55. array (size=3)
56. ‘id‘ => int 2
57. ‘name‘ =>
58. array (size=1)
59. 0 => string ‘cc‘ (length=2)
60. ‘pwd‘ =>
61. array (size=1)
62. 0 => string ‘78‘ (length=2)

1. // $field 為一維數字數組，$field[0]為用於分組的單一字段。
3. public function combine($array,$field){
4. $tmpArray = array();
5. $distinct_field = $field[0];
6. unset($field[0]);
7. foreach ($array as $row) {
8. $key = $row[$distinct_field];
9. if (array_key_exists($key, $tmpArray)) {
10. foreach($field as $value){
11. if (is_array($tmpArray[$key][$value])) {
12. $tmpArray[$key][$value][] = $row[$value];
13. } else {
14. $tmpArray[$key][$value] = array($tmpArray[$key][$value], $row[$value]);
15. }
16. }
17. } else {
18. $tmpArray[$key][$distinct_field] = $row[$distinct_field];
19. foreach ($field as $value){
20. $tmpArray[$key][$value] = array($row[$value]);
21. }
22. }
23. }
24. return $tmpArray;
25. }

PHP合並某個字段相同的數組，並重組數據算法