WordPress – 在文章編輯頁面增加私人筆記欄位寫備註 – ARON HACK 亞倫害的

add_action( 'add_meta_boxes', 'custom_post_option_meta_box' );
function custom_post_option_meta_box() {
    add_meta_box(
        'custom_post_option_meta_group',
        'Custom Post Options',
        'custom_post_option_meta_box_callback',
        'post'
    );
}

function custom_post_option_meta_box_callback($post){

  $post_id = $post->ID; ?>

  
  

    Show Modified Date
    >
  

  
  

    Private Note
    <?php echo $private_note; ?>
  
  

add_action('save_post', 'save_post_private_note');
function save_post_private_note( $post_id ) {
  if ( isset($_POST['private_note']) ) {
		update_post_meta($post_id, 'private_note', esc_textarea($_POST['private_note']));
  }
}

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