manage_{$post_type}_posts_columns
Filter Hook: Filters the columns displayed in the Posts list table for a specific post type.
Source: wp-admin/includes/class-wp-posts-list-table.php:756
manage_posts_custom_column
Action Hook: Fires in each custom column in the Posts list table.
Source: wp-admin/includes/class-wp-posts-list-table.php:1351
WP_Posts_List_Table::is_base_request()
Method: Determine if the current view is the “All” view.
Source: wp-admin/includes/class-wp-posts-list-table.php:235
WP_Posts_List_Table::get_sortable_columns()
Method:
Source: wp-admin/includes/class-wp-posts-list-table.php:762
manage_{$post->post_type}_posts_custom_column
Action Hook: Fires for each custom column of a specific post type in the Posts list table.
Source: wp-admin/includes/class-wp-posts-list-table.php:1369