Definition:
function get_post_thumbnail_id( $post_id = null ) {}
Retrieve Post Thumbnail ID.
Parameters
- int $post_id: Optional. Post ID.
Source code
function get_post_thumbnail_id( $post_id = null ) { $post_id = ( null === $post_id ) ? get_the_ID() : $post_id; return get_post_meta( $post_id, '_thumbnail_id', true ); }
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