PHP将数组分成基于相等值的组

发布时间：2020-12-13 16:38:03 所属栏目：PHP教程来源：网络整理

导读：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] = Departmen

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;
}

（编辑：李大同）

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