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 |
|---|---|
| 360 | |
| 361 | if ( ($client_last_modified && $client_etag) ? |
| 362 | (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) : |
| 363 | (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) { |
| 364 | $status = 304; |
| 365 | $exit_required = true; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | $headers = apply_filters('wp_headers', $headers, $this); |
| 370 | |
| 371 | if ( ! empty( $status ) ) |
| 372 | status_header( $status ); |
| 373 | |
| 374 | // If Last-Modified is set to false, it should not be sent (no-cache situation). |
| 375 | if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) { |
| 376 | unset( $headers['Last-Modified'] ); |
| 377 | |
| 378 | // In PHP 5.3+, make sure we are not sending a Last-Modified header. |