问避免ACF get_field并返回核心Wordpress函数

EN

function slb_subscriber_column_data( $column, $post_id ) {  
  // setup our return text
  $output = '';  
  switch( $column ) {    
    case 'title':
      // get the custom name data
      $fname = get_field('slb_first_name', $post_id );
      $lname = get_field('slb_last_name', $post_id );
      $output .= $fname .' '. $lname;
      break;
    case 'email':
      // get the custom email data
      $email = get_field('slb_email', $post_id );
      $output .= $email;
      break;    
  }  
  // echo the output
  echo $output;  
}

function slb_register_custom_admin_titles() {
    add_filter(
        'the_title',
        'slb_custom_admin_titles',
        99,
        2
    );
}

function slb_custom_admin_titles( $title, $post_id ) {
   
    global $post;  
    $output = $title;   
    if( isset($post->post_type) ):
      switch( $post->post_type ) {
        case 'slb_subscriber':
        $fname = get_field('slb_first_name', $post_id );
        $lname = get_field('slb_last_name', $post_id );
        $output = $fname .' '. $lname;
        break;
      }
      endif;   
    return $output;
}