PHP merges a field with the same array and reorganizes the data algorithm

2. $array Reorganization of an array:
8. $array = Array (
10. Array (' id ' =>1,' name ' = 'aa ',' pwd ' = ' + '),
12. Array (' id ' =>1,' name ' = = 'bb ',' pwd ' = ' + '),
14. Array (' id ' =>1,' name ' = 'saa ',' pwd ' = ' ") ',
18. Array (' id ' =>2,' name ' = 'cc ',' pwd ' = ' + ')
20. );
22. The implementation code is as follows:
26. $tmpArray = Array ();
28. foreach ($array as $row) {
32. $key = $row [' id '];
34. if (array_key_exists ($key, $tmpArray)) {
36. //$tmpArray [$key] [' pwd '] = $tmpArray [$key] [' pwd ']. ‘,‘ .  $row [' pwd ']; In this sentence, the following conditional statements about PWD are removed to implement their string form
38. if (is_array ($tmpArray [$key] [' name ']) {
40. $tmpArray [$key] [' name '] [] = $row [' name '];
42. } Else {
44. $tmpArray [$key] [' name '] = Array ($tmpArray [$key] [' name '] , $row [' name ']);
46. }
48. if (is_array ($tmpArray [$key] [' pwd ']) {
50. $tmpArray [$key] [' pwd '] [] = $row [' pwd '];
52. } Else {
54. $tmpArray [$key] [' pwd '] = Array ($tmpArray [$key [' pwd '], $row [' pwd ']);
56. }
58. } Else {
60. $tmpArray [$key] = Array (' id ' = +$row [' id '],' name ' = =Array ($row [' name ' ]),' pwd ' = =Array ($row [' pwd ']); //This sentence to note that can be set
62. //$tmpArray [$key] = $row;//You may replace the above sentence when there are fields added
64. }
66. }
70. echo "<pre>";
72. Var_dump ($tmpArray);
76. Printing results are:
80. Array (size=2)
82. 1 =
84. Array (size=3)
86. ' id ' = int 1
88. ' name ' + =
90. Array (size=3)
92. 0 = string ' AA ' (length=2)
94. 1 = string ' BB ' (length=2)
96. 2 = string ' saa ' (length=3)
98. ' pwd ' =
100. Array (size=3)
102. 0 = string ' a ' (length=2)
104. 1 = string ' All ' (length=2)
106. 2 = string ' "" (length=2)
108. 2 =
110. Array (size=3)
112. ' id ' = int 2
114. ' name ' + =
116. Array (size=1)
118. 0 = string ' cc ' (length=2)
120. ' pwd ' =
122. Array (size=1)
124. 0 = string ' + ' (length=2)

2. $field is a one-dimensional array of numbers, $field [0] is a single field for grouping.
6. public function combine ($array,$field) {
8. $tmpArray = Array ();
10. $distinct _field = $field [0];
12. unset ($field [0]);
14. foreach ($array as $row) {
16. $key = $row [$distinct _field];
18. if (array_key_exists ($key, $tmpArray)) {
20. foreach ($field as $value) {
22. if (is_array ($tmpArray [$key] [$value])) {
24. $tmpArray [$key] [$value] [] = $row [$value];
26. } Else {
28. $tmpArray [$key] [$value] = Array ($tmpArray [$key] [$value], $row [$value]);
30. }
32. }
34. } Else {
36. $tmpArray [$key] [$distinct _field] = $row [$distinct _field];
38. foreach ($field as $value) {
40. $tmpArray [$key] [$value] = Array ($row [$value]);
42. }
44. }
46. }
48. return $tmpArray;
50. }

PHP merges a field with the same array and reorganizes the data algorithm