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
        )

)

我想从

中退出

  

app_subject_id

以逗号分隔的数组。我怎么能这样做？

这是我想要的输出

数组（[0] =＆gt; 1013 [1] =＆gt; 1016 [2] =＆gt; 1017 [3] =＆gt; 1013 [4] =＆gt; 1016 [5] =＆gt; 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

Answer 2

一个班轮将会这样做：

$appSubjectId = implode(',', array_column($originalArray, 'app_subject_id'));

http://php.net/manual/en/function.implode.php

http://php.net/manual/en/function.array-column.php

Answer 3

最后我做到了这一点，感谢您的大力支持。

       $subjctss = $myarray;

     if (!empty($subjctss)) {

                                        $subid_arr = array();
                                        foreach ($subjctss as $values) {
                                            $app_sub = $values['app_subject_id'];
                                            $subid_arr[] = $app_sub;

                                            echo '<ul><li>' . $values['app_subject_name'] . '</li>

                            </ul>';
                                        }
                                        if (!empty($subid_arr) && is_array($subid_arr)) {
//                                            $app_sub_comma_seprated = implode(',', $subid_arr);
                                            print_r($subid_arr);
                                        }
                                    }