@@ -124,7 +124,7 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
124124 $ response = $ this ->_withCacheHeaders (
125125 $ response ,
126126 $ config ['cacheTime ' ],
127- $ modifiedTime
127+ $ modifiedTime,
128128 );
129129 }
130130
@@ -165,7 +165,7 @@ protected function _checkSignature(ServerRequestInterface $request): void
165165 try {
166166 SignatureFactory::create ($ signKey )->validateRequest (
167167 $ this ->_path ,
168- $ request ->getQueryParams ()
168+ $ request ->getQueryParams (),
169169 );
170170 } catch (Exception $ exception ) {
171171 throw new SignatureException ($ exception ->getMessage (), null , $ exception );
@@ -184,28 +184,21 @@ protected function _checkSignature(ServerRequestInterface $request): void
184184 */
185185 protected function _checkModified (ServerRequestInterface $ request , Server $ server ): ResponseInterface |int |null
186186 {
187- $ modifiedTime = false ;
188-
189187 try {
190- /** @var string|int|false $modifiedTime */
191188 $ modifiedTime = $ server ->getSource ()
192189 ->lastModified ($ server ->getSourcePath ($ this ->_path ));
193190 } catch (Exception $ exception ) {
194191 return $ this ->_handleException ($ request , $ exception );
195192 }
196193
197- if ($ modifiedTime === false ) {
198- return null ;
199- }
200-
201194 if ($ this ->_isNotModified ($ request , $ modifiedTime )) {
202195 $ response = new Response (['status ' => 304 ]);
203196 $ response = $ this ->_withCustomHeaders ($ response );
204197
205198 return $ response ->withHeader ('Last-Modified ' , (string )$ modifiedTime );
206199 }
207200
208- return ( int ) $ modifiedTime ;
201+ return $ modifiedTime ;
209202 }
210203
211204 /**
@@ -306,7 +299,7 @@ protected function _isNotModified(ServerRequestInterface $request, string|int $m
306299 protected function _withCacheHeaders (
307300 ResponseInterface $ response ,
308301 string $ cacheTime ,
309- string |int $ modifiedTime
302+ string |int $ modifiedTime,
310303 ): ResponseInterface {
311304 /** @var int $expire */
312305 $ expire = strtotime ($ cacheTime );
@@ -346,7 +339,7 @@ protected function _handleException(ServerRequestInterface $request, Exception $
346339 {
347340 $ event = $ this ->dispatchEvent (
348341 static ::RESPONSE_FAILURE_EVENT ,
349- compact ('request ' , 'exception ' )
342+ compact ('request ' , 'exception ' ),
350343 );
351344 $ result = $ event ->getResult ();
352345
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