我有一个元框，我试图获得当前的帖子id，但我得到了不同帖子的id。有没有其他方法获取ID？

function global_notice_meta_box() {

    $screens = array( \'avent_event\' );

    foreach ( $screens as $screen ) {
        add_meta_box(
            \'global-notice\',
            __( \'Event Attendees\', \'sitepoint\' ),
            \'global_notice_meta_box_callback\',
            $screen
        );
    }
}

add_action( \'add_meta_boxes\', \'global_notice_meta_box\' );


function global_notice_meta_box_callback( $post ) {

    wp_reset_postdata();

    // 1st Method - Declaring $wpdb as global and using it to execute an SQL query statement that returns a PHP object
    global $wpdb;
    $results = $wpdb->get_results( \'SELECT * FROM avent_event_guestlist WHERE event_id = \'.$post->ID, OBJECT );

    print_r($post);
}