获取我的以下用户正在关注的用户

我有一个社交网站，其中包含跟踪用户系统。

每个用户有两个自定义元：

following\\u用户我的问题是如何获得我的following用户正在跟踪的用户？

我尝试过这样的方法，但不起作用：

$get_the_following_users = get_user_meta($current_user->ID, \'following_users\', true);
foreach ( $get_the_following_users as $following_user ) {
    $following_user = get_user_meta($following_user, \'following_users\', true);

    $meta_qssuery .= $following_user.\', \';
}

echo $meta_qssuery;

注意：我存储以下\\u用户和followers\\u用户的数组元，如下所示：

a:8:{i:9;i:9;i:57;i:57;i:3;i:3;i:71;i:71;i:85;i:85;i:89;i:89;i:152;i:152;i:2;i:2;}

$get_the_following_users = get_user_meta($current_user->ID, \'following_users\', true); $meta_qssuery = \'\'; //initialise to an empty string foreach ( $get_the_following_users as $following_user ) { $following_user = get_user_meta($following_user, \'following_users\', true); if(!empty($following_user)) { //check if any data was returned $meta_qssuery .= implode(\', \', $following_user).\', \'; } } echo $meta_qssuery;

$get_the_following_users = get_user_meta($current_user->ID, \'following_users\', true); $get_the_following_users_2 = array(); foreach ( $get_the_following_users as $following_user ) { $following_user = get_user_meta($following_user, \'following_users\', true); if(!empty($following_user)) { //check if any data was returned $get_the_following_users_2[] = implode(\', \', $following_user); } } $meta_qssuery = implode(\', \', $get_the_following_users_2); echo $meta_qssuery;

ARRAY_FILTER WARNING-wp-Includes/post.php第3148行

我插入the following code, 请参见下文，从前端提交帖子。提交时，会出现以下警告：警告：array\\u filter（）要求参数1为数组，字符串在[…]中给出/wp包括/后。php在线3148我不知道警告来自哪里，哪个数组是字符串？function ty_front_end_form() { ?> <form id=\"custom-post-type\" name=\"custom-post-type\" method=\"post

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ARRAY_FILTER WARNING-wp-Includes/post.php第3148行