php - Wordpress last revision date -

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i try add column date of last revision , use code. there wrong here? thing is, doesn't work, doesn't give me error message

add_filter('manage_pages_columns', 'add_revised_column'); add_action('manage_pages_custom_column', 'echo_revised_column', 10, 2);  function add_revised_column($columns) {  $columns['revised'] = 'revised';  return $columns; }   function echo_revised_column($column, $id) {  if ('revised' == $column)     echo get_post_field('post_modified', $id); }

this looks fine me in general. similar add media height x width dimensions on manage media page, , code pattern identical.

but: recommend create constant, , use throughout avoid issue, eg:

define('col_name_revised','revised'); ... $columns['col_name_revised'] = 'revision info'; ... if (col_name_revised == $column) ...

edit: had answered key-names mismatched, on re-visiting question realised not mismatched. therefore, afaik op's code ok.


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