Menu Adam R Brown

WP hooks navigation: Home/browseActions indexFilters index

Source View: wp_headers

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
402
403           /**
404            * Filter the HTTP headers before they're sent to the browser.
405            *
406            * @since 2.8.0
407            *
408            * @param array $headers The list of headers to be sent.
409            * @param WP    $this    Current WordPress environment instance.
410            */
411           $headers = apply_filters( 'wp_headers', $headers, $this );
412
413           if ( ! empty( $status ) )
414                status_header( $status );
415
416           // If Last-Modified is set to false, it should not be sent (no-cache situation).
417           if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) {
418                unset( $headers['Last-Modified'] );
419
420                // In PHP 5.3+, make sure we are not sending a Last-Modified header.