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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 283 | if ( post_type_supports( $post_type, 'comments' ) && !in_array( $post_status, array( 'pending', 'draft', 'future' ) ) ) |
| 284 | $posts_columns['comments'] = '<span class="vers"><img alt="' . esc_attr__( 'Comments' ) . '" src="' . esc_url( admin_url( 'images/comment-grey-bubble.png' ) ) . '" /></span>'; |
| 285 | |
| 286 | $posts_columns['date'] = __( 'Date' ); |
| 287 | |
| 288 | if ( 'page' == $post_type ) |
| 289 | $posts_columns = apply_filters( 'manage_pages_columns', $posts_columns ); |
| 290 | else |
| 291 | $posts_columns = apply_filters( 'manage_posts_columns', $posts_columns, $post_type ); |
| 292 | $posts_columns = apply_filters( "manage_{$post_type}_posts_columns", $posts_columns ); |
| 293 | |
| 294 | return $posts_columns; |
| 295 | } |
| 296 | |
| 297 | function get_sortable_columns() { |
| 298 | return array( |
| 299 | 'title' => 'title', |
| 300 | 'author' => 'author', |
| 301 | 'parent' => 'parent', |