这在任何其他帖子中都可以很好地工作:
$vid_att = get_attached_media('video',$post_id); // Check if a video is attached
// print_r($vid_att);
if ($vid_att) {
$vid_att_url = wp_get_attachment_url($vid_att->ID);
echo $vid_att_url;
}
然而,
如果我在functions.php文件中使用它,它将返回完整的数组(print_r($vid_att);),但不会在请求时返回ID!
如果我手动插入附件ID,它可以工作:
$vid_att_url = wp_get_attachment_url('138');
那会是什么呢?我已经尝试将ID转换为Integer和其他东西,但无法让它工作。还给出了ne个错误。
它返回的数组如下所示:
Array ( [138] => WP_Post Object ( [ID] => 138 [post_author] => 1 [post_date] => 2018-08-14 16:21:42 [post_date_gmt] => 2018-08-14 16:21:42 [post_content] => [post_title] => SampleVideo_1280x720_1mb [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => samplevideo_1280x720_1mb [to_ping] => [pinged] => [post_modified] => 2018-08-14 16:21:42 [post_modified_gmt] => 2018-08-14 16:21:42 [post_content_filtered] => [post_parent] => 113 [guid] => http://flockstock/wp-content/uploads/edd/2018/08/SampleVideo_1280x720_1mb.mp4 [menu_order] => 0 [post_type] => attachment [post_mime_type] => video/mp4 [comment_count] => 0 [filter] => raw ) )
发布于 2018-08-17 21:44:25
结论:
$vid_att = get_attached_media('video',$post_id); // Check if a video is attached
if ($vid_att) {
$vid_att_arr = array_values($vid_att);
$vid_att_ID = $vid_att_arr[0]->ID;
$vid_att_url = wp_get_attachment_url($vid_att_ID);
// echo $vid_att_url;
}else{
echo 'No Video uploaded!';
}
发布于 2018-08-17 07:52:08
尝试在此之前声明超级变量:
global $post;
echo $post->ID;
发布于 2018-08-17 16:35:39
感谢@wkille指出了这篇文章的答案:Get attachment URL
在使用数组之前,请对其重新编制索引:
$vid_att = array_values($vid_att);
echo 'GUID: ' . $vid_att[0]->guid;
注意:
wp_get_attachment_url($post_id->ID);
仍然不能在functions.php中工作,即使你重新索引数组,但它可以在posts中工作,有人知道这是为什么吗?
https://stackoverflow.com/questions/51884392
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