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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 |
|---|---|
| 225 | if ( '' != $pagestruct && ( ( isset($post->post_status) && 'draft' != $post->post_status ) || $sample ) ) { |
| 226 | $link = get_page_uri($id); |
| 227 | $link = ( $leavename ) ? $pagestruct : str_replace('%pagename%', $link, $pagestruct); |
| 228 | $link = trailingslashit(get_option('home')) . "$link"; |
| 229 | $link = user_trailingslashit($link, 'page'); |
| 230 | } else { |
| 231 | $link = trailingslashit(get_option('home')) . "?page_id=$id"; |
| 232 | } |
| 233 | |
| 234 | return apply_filters( '_get_page_link', $link, $id ); |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Retrieve permalink for attachment. |
| 239 | * |
| 240 | * This can be used in the WordPress Loop or outside of it. |
| 241 | * |
| 242 | * @since 2.0.0 |
| 243 | * |