wp-includes/media.php:5611Retrieves the image srcs from galleries from a post's content, if present.
$postint|WP_Postoptional0arrayfunction get_post_galleries_images( $post = 0 ) { $galleries = get_post_galleries( $post, false ); return wp_list_pluck( $galleries, 'src' );}Introduced in 3.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.