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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 |
|---|---|
| 305 | global $wp_query; |
| 306 | if ( is_page() ) |
| 307 | $current_page = $wp_query->get_queried_object_id(); |
| 308 | $output .= walk_page_tree($pages, $r['depth'], $current_page, $r); |
| 309 | |
| 310 | if ( $r['title_li'] ) |
| 311 | $output .= '</ul></li>'; |
| 312 | } |
| 313 | |
| 314 | $output = apply_filters('wp_list_pages', $output); |
| 315 | |
| 316 | if ( $r['echo'] ) |
| 317 | echo $output; |
| 318 | else |
| 319 | return $output; |
| 320 | } |
| 321 | |
| 322 | // |
| 323 | // Page helpers |