Retrieves thumbnail for an attachment.
Description
Note that this works only for the (very) old image metadata style where ‘thumb’ was set, and the ‘sizes’ array did not exist. This function returns false for the newer image metadata style despite that ‘thumbnail’ is present in the ‘sizes’ array.
Parameters
$post_idintoptional- Attachment ID. Default is the ID of the global
$post.
Source
function wp_get_attachment_thumb_file( $post_id = 0 ) {
_deprecated_function( __FUNCTION__, '6.1.0' );
$post_id = (int) $post_id;
$post = get_post( $post_id );
if ( ! $post ) {
return false;
}
// Use $post->ID rather than $post_id as get_post() may have used the global $post object.
$imagedata = wp_get_attachment_metadata( $post->ID );
if ( ! is_array( $imagedata ) ) {
return false;
}
$file = get_attached_file( $post->ID );
if ( ! empty( $imagedata['thumb'] ) ) {
$thumbfile = str_replace( wp_basename( $file ), $imagedata['thumb'], $file );
if ( file_exists( $thumbfile ) ) {
/**
* Filters the attachment thumbnail file path.
*
* @since 2.1.0
*
* @param string $thumbfile File path to the attachment thumbnail.
* @param int $post_id Attachment ID.
*/
return apply_filters( 'wp_get_attachment_thumb_file', $thumbfile, $post->ID );
}
}
return false;
}
Hooks
- apply_filters( ‘wp_get_attachment_thumb_file’,
string $thumbfile ,int $post_id ) Filters the attachment thumbnail file path.
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