concrete/src/Cache/Page/PageCache.php
public function outputCacheHeaders(ConcretePage $c)
    {
        foreach ($this->getCacheHeaders($c) as $header) {
            header($header);
        }
    }
public function outputCacheHeaders(ConcretePage $c)
    {
        foreach ($this->getCacheHeaders($c) as $header) {
            header($header);
        }
    }
public function outputCacheHeaders ( ConcretePage $ c ) { foreach ( $ this -> getCacheHeaders ( $ c ) as $ header ) { header ( $ header ) ; } }
Send the cache-related HTTP headers for a page to the current response.

@deprecated Headers are no longer set directly. Instead, use the
<code>$pageCache->deliver()</code>
method to retrieve a response object and either return it from a controller method or, if you must, use
<code>$response->prepare($request)->send()</code>

@param \Concrete\Core\Page\Page $c
Send the cache - related HTTP headers for a page to the current response .