WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 275 | * |
| 276 | * @since 1.0.0 |
| 277 | * |
| 278 | * @param string $url Permalink to check. |
| 279 | * @return int Post ID, or 0 on failure. |
| 280 | */ |
| 281 | function url_to_postid($url) { |
| 282 | global $wp_rewrite; |
| 283 | |
| 284 | $url = apply_filters('url_to_postid', $url); |
| 285 | |
| 286 | // First, check to see if there is a 'p=N' or 'page_id=N' to match against |
| 287 | if ( preg_match('#[?&](p|page_id|attachment_id)=(\d+)#', $url, $values) ) { |
| 288 | $id = absint($values[2]); |
| 289 | if ( $id ) |
| 290 | return $id; |
| 291 | } |
| 292 | |
| 293 | // Check to see if we are using rewrite rules |