在PHP中将数组元素转换为逗号分隔数组

Question

我有一个这种类型的数组,我想将一些元素转换为逗号separeted

 Array
(
    [0] => Array
        (
            [tution_provider] => sd
            [app_subject_name] => KE2-Management Accounting Information
            [exam_activity] => 734
            [icasl_no] => 1746828
            [app_subject_id] => 1013
            [exam_session] => 000091
            [id] => 724
        )

    [1] => Array
        (
            [tution_provider] => sdfsdf
            [app_subject_name] => KE3B-Fundamentals of Law
            [exam_activity] => 734
            [icasl_no] => 1746828
            [app_subject_id] => 1016
            [exam_session] => 000091
            [id] => 725
        )

    [2] => Array
        (
            [tution_provider] => sdfsdfsdf
            [app_subject_name] => KE4-Processes, Assurance & Ethics
            [exam_activity] => 734
            [icasl_no] => 1746828
            [app_subject_id] => 1017
            [exam_session] => 000091
            [id] => 726
        )

)

而且我想从中脱颖而出

app_subject_id

作为逗号分隔的数组.我怎样才能做到这一点？

这是我想要的输出

数组([0] => 1013 [1] => 1016 [2] => 1017 [3] => 1013 [4] => 1016 [5] => 1017)

Answer 1

$array = array_column($array, 'app_subject_id'); //Get an array of just the app_subject_id column
$array = implode(',', $array); //creates a string of the id's separated by commas

输出:

1013,1016,1017