get_post_permalink example

    if ( empty( $post->ID ) ) {
        return false;
    }

    if ( 'page' === $post->post_type ) {
        return get_page_link( $post, $leavename, $sample );
    } elseif ( 'attachment' === $post->post_type ) {
        return get_attachment_link( $post, $leavename );
    } elseif ( in_array( $post->post_type, get_post_types( array( '_builtin' => false ) ), true ) ) {
        return get_post_permalink( $post, $leavename, $sample );
    }

    $permalink = get_option( 'permalink_structure' );

    /** * Filters the permalink structure for a post before token replacement occurs. * * Only applies to posts with post_type of 'post'. * * @since 3.0.0 * * @param string $permalink The site's permalink structure. * @param WP_Post $post The post in question. * @param bool $leavename Whether to keep the post name. */