function get_post_thumbnail_id( $post_id = null ) {}

Retrieve Post Thumbnail ID.


  • 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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