以下内容对我有用。我将元保存和检索挂接到了相同的操作（post\\u transition\\u status），但优先级不同。

//Save Your Custom Meta Meta, but hook it to transition_post_status instead of save_post, with a priority of 1
function save_yourpost_meta(){
  global $post;
      if($post -> post_type == \'your_post_type\') {
          update_post_meta($post->ID, "your_meta_key", $_POST["your_meta_key"]);
      }
  }
add_action(\'transition_post_status\', \'save_yourpost_meta\',1,1);


//Then retrieve your custom meta only when the post is saved for the first time, not on updates. Hooked to the same action, with a lower priority of 100

function get_meta_on_publish($new_status, $old_status, $post) {
if(\'publish\' == $new_status && \'publish\' !== $old_status && $post->post_type == \'your_post_type\') {
  //Get your meta info
  global $post;
  $postID = $post->ID;
  $custom = get_post_custom($postID);
  //You have your custom now, have fun.

  }
}
add_action(\'transition_post_status\', \'get_meta_on_publish\',100,3);

你检查过了吗wp_insert_post 抄本里的钩子？

我相信这就是你要找的。（未经测试）

class bananas {

    public function __construct() {
        add_action( \'wp_insert_post\', array( $this, \'email_bananas_published\' ), 10, 3 );
    }


    public function email_bananas_published( $post_id, $post, $update ) {

        // If this is a revision, don\'t send the email.
        if ( wp_is_post_revision( $post_id ) || $update )
            return;


        if ( $post->post_type === \'bananas\' && $post->post_status === \'publish\' ) {
            $email = get_post_meta( $post_id, \'_bananas_email\', true );
            error_log( $email );
        }
    }
}