我有一个Array包含2个值的数组,第一个是作者的编号,第二个是他的隶属关系.
- Array (
- [0] => Array (
- [0] => 2
- [1] => Department of General Chemistry
- )
- [1] => Array (
- [0] => 3
- [1] => Institute of Silicate Materials
- )
- [2] => Array (
- [0] => 4
- [1] => Department of General Chemistry
- )
- [3] => Array (
- [0] => 5
- [1] => Department of General Chemistry
- )
- [4] => Array (
- [0] => 6
- [1] => Institute of Silicate Materials
- )
- )
如果隶属关系相同,我如何分组作者？我需要输出如下：
- 3,6 Institute of Silicate Materials
- 2,4,5 Department of General Chemistry
- foreach ($array as $key => $value) {
- $return[$value[1]][] = $value[0];
- }
- foreach ($return as $key => $value) {
- echo implode(',',$value)." ".$key;
- }
