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;
}
