I have a meta box and I am trying to get the current post id however I am getting the ID of a different post. Is there another way to get the ID?

function global_notice_meta_box() {

    $screens = array( 'avent_event' );

    foreach ( $screens as $screen ) {
            __( 'Event Attendees', 'sitepoint' ),

add_action( 'add_meta_boxes', 'global_notice_meta_box' );

function global_notice_meta_box_callback( $post ) {


    // 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 );

  • is something changing if you comment the call to wp_reset_postdata ? – mmm Oct 8 '17 at 14:56
  • No with or without it still returns the incorrect post id – Ben H Oct 8 '17 at 16:20

Use the global variable $post. It is not specific to the Metabox, which is really just a portal for display.

 global $post;
 $PostId     = $post->ID;   

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