src/Image/Server.php
private function sendCachingHeaders(string $imagePath = ''): void
    {
        $ifModifiedSince = '';
        if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
            $ifModifiedSince = \preg_replace('/;.*$/', '', $_SERVER['HTTP_IF_MODIFIED_SINCE']);
        }

        $mdate = \gmdate('D, d M Y H:i:s', \filemtime($imagePath)).' GMT';
        if ($ifModifiedSince == $mdate) {
            \header($this->serverProtocol.' 304 Not Modified', true, 304);
            die();
        }

        \header($this->serverProtocol.' 200 OK', true, 200);
        \header('Last-Modified: '.$mdate);

        $maxAge = $this->baseClass->Image->Server->cacheTime;
        $maxAgeHeader = 'Cache-Control: no-transform,public,max-age='.$maxAge;
        if ($maxAge == 0) {
            $maxAgeHeader = 'Cache-Control: max-age=0, no-cache, no-store';
        }

        \header($maxAgeHeader);
        \header('Expires: '.\gmdate('D, d M Y H:i:s', \time() + $maxAge).' GMT');
    }
private function sendCachingHeaders(string $imagePath = ''): void
    {
        $ifModifiedSince = '';
        if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
            $ifModifiedSince = \preg_replace('/;.*$/', '', $_SERVER['HTTP_IF_MODIFIED_SINCE']);
        }

        $mdate = \gmdate('D, d M Y H:i:s', \filemtime($imagePath)).' GMT';
        if ($ifModifiedSince == $mdate) {
            \header($this->serverProtocol.' 304 Not Modified', true, 304);
            die();
        }

        \header($this->serverProtocol.' 200 OK', true, 200);
        \header('Last-Modified: '.$mdate);

        $maxAge = $this->baseClass->Image->Server->cacheTime;
        $maxAgeHeader = 'Cache-Control: no-transform,public,max-age='.$maxAge;
        if ($maxAge == 0) {
            $maxAgeHeader = 'Cache-Control: max-age=0, no-cache, no-store';
        }

        \header($maxAgeHeader);
        \header('Expires: '.\gmdate('D, d M Y H:i:s', \time() + $maxAge).' GMT');
    }
private function sendCachingHeaders ( string $ imagePath = '' ) : void { $ ifModifiedSince = '' ; if ( isset ( $ _SERVER [ 'HTTP_IF_MODIFIED_SINCE' ] ) ) { $ ifModifiedSince = \ preg_replace ( '/;.*$/' , '' , $ _SERVER [ 'HTTP_IF_MODIFIED_SINCE' ] ) ; } $ mdate = \ gmdate ( 'D, d M Y H:i:s' , \ filemtime ( $ imagePath ) ) . ' GMT' ; if ( $ ifModifiedSince == $ mdate ) { \ header ( $ this -> serverProtocol . ' 304 Not Modified' , true , 304 ) ; die ( ) ; } \ header ( $ this -> serverProtocol . ' 200 OK' , true , 200 ) ; \ header ( 'Last-Modified: ' . $ mdate ) ; $ maxAge = $ this -> baseClass -> Image -> Server -> cacheTime ; $ maxAgeHeader = 'Cache-Control: no-transform,public,max-age=' . $ maxAge ; if ( $ maxAge == 0 ) { $ maxAgeHeader = 'Cache-Control: max-age=0, no-cache, no-store' ; } \ header ( $ maxAgeHeader ) ; \ header ( 'Expires: ' . \ gmdate ( 'D, d M Y H:i:s' , \ time ( ) + $ maxAge ) . ' GMT' ) ; }
Sends caching headers

@param string $imagePath
Sends caching headers