wp_get_attachment_thumb_url( int $post_id )
Retrieves URL for an attachment thumbnail.
Parameters
- $post_id
-
(Optional) Attachment ID. Default is the ID of the global
$post
.
Return
(string|false) Thumbnail URL on success, false on failure.
Source
File: wp-includes/post.php
function wp_get_attachment_thumb_url( $post_id = 0 ) {
$post_id = (int) $post_id;
if ( !$post = get_post( $post_id ) )
return false;
if ( !$url = wp_get_attachment_url( $post->ID ) )
return false;
$sized = image_downsize( $post_id, 'thumbnail' );
if ( $sized )
return $sized[0];
if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
return false;
$url = str_replace(basename($url), basename($thumb), $url);
/**
* Filters the attachment thumbnail URL.
*
* @since WP-2.1.0
*
* @param string $url URL for the attachment thumbnail.
* @param int $post_id Attachment ID.
*/
return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
}
Changelog
Version | Description |
---|---|
6.1.0 | Changed to use wp_get_attachment_image_url(). |
2.1.0 | Introduced. |