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I saw this code as how to set a featured image for a post:

// required libraries for media_sideload_image
require_once(ABSPATH . 'wp-admin/includes/file.php');
require_once(ABSPATH . 'wp-admin/includes/media.php');
require_once(ABSPATH . 'wp-admin/includes/image.php');

// $post_id == the post you want the image to be attached to
// $video_thumb_url == the vimeo video's thumb url
// $description == optional description

// load the image
$result = media_sideload_image($video_thumb_url, $description);

// then find the last image added to the post attachments
$attachments = get_posts(array('numberposts' => '1', 'post_parent' => $post_id, 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC'));


if(sizeof($attachments) > 0){
    // set image as the post thumbnail
    set_post_thumbnail($post_id, $attachments[0]->ID);
}

But how do I get that information when I retrieve a post? Is there a property or method that I use?

  • Do you wanted get post featured image url? – WPTC-Troop Jan 7 '16 at 19:19
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 [0] => url
 [1] => width
 [2] => height
 [3] => boolean: true if $url is a resized image, false if it is the original or if no image is available.

In the above example you can get the src and id using:

$image_src  = media_sideload_image($video_thumb_url, $description, 'src');
$image_id   = attachment_url_to_postid($image_src); 
set_post_thumbnail($post_id, $image_id );
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$url = wp_get_attachment_url(get_post_thumbnail_id(get_the_ID()));

above code get current featured image url. I hope it work for you.

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