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get_post_thumbnail_id › WordPress Function
Since2.9.0
已弃用n/a
› get_post_thumbnail_id ( $post = null )
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Retrieves the post thumbnail ID.
Related Functions: set_post_thumbnail, set_post_thumbnail_size, get_the_post_thumbnail, the_post_thumbnail, get_the_post_thumbnail_url
源码
function get_post_thumbnail_id( $post = null ) { $post = get_post( $post ); if ( ! $post ) { return false; } $thumbnail_id = (int) get_post_meta( $post->ID, '_thumbnail_id', true ); /** * Filters the post thumbnail ID. * * @since 5.9.0 * * @param int|false $thumbnail_id Post thumbnail ID or false if the post does not exist. * @param int|WP_Post|null $post Post ID or WP_Post object. Default is global `$post`. */ return (int) apply_filters( 'post_thumbnail_id', $thumbnail_id, $post ); }