Add page/post ID to backend

add-page-post-id-to-backend

<?php
function posts_columns_id($defaults){
$defaults['wps_post_id'] = __('ID');
return $defaults;
}// end posts_columns_id function
function posts_custom_id_columns($column_name, $id){
if($column_name === 'wps_post_id'){
echo $id;
}
}// end posts_custom_id_columns function

add_filter('manage_posts_columns', 'posts_columns_id', 5);
add_action('manage_posts_custom_column', 'posts_custom_id_columns', 5, 2);
add_filter('manage_pages_columns', 'posts_columns_id', 5);
add_action('manage_pages_custom_column', 'posts_custom_id_columns', 5, 2);
?>