WordPress Code Reference

begin_fetch_post_thumbnail_html

Summery Summery

Fires before fetching the post thumbnail HTML.

do_action( 'begin_fetch_post_thumbnail_html', int $post_id, string $post_thumbnail_id, string|array $size )

Provides "just in time" filtering of all filters in wp_get_attachment_image().

$post_id: The post ID.
$post_thumbnail_id: The post thumbnail ID.
$size: The post thumbnail size. Image size or array of width and height values (in that order). Default 'post-thumbnail'.

Changelog
Version	Description
2.9.0	Introduced.