CS

src/Symfony/Component/HttpKernel/HttpCache/ResponseCacheStrategy.php

@@ -30,15 +30,13 @@ class ResponseCacheStrategy implements ResponseCacheStrategyInterface
 {
     /**
      * Cache-Control headers that are sent to the final response if they appear in ANY of the responses.
-     * @var array
      */
-    private static $overrideDirectives = ['no-cache', 'no-store', 'no-transform', 'must-revalidate', 'proxy-revalidate'];
+    private static $overrideDirectives = array('no-cache', 'no-store', 'no-transform', 'must-revalidate', 'proxy-revalidate');
 
     /**
      * Cache-Control headers that are sent to the final response if the appear in ALL of the responses.
-     * @var array
      */
-    private static $inheritDirectives = ['public', 'private', 'immutable'];
+    private static $inheritDirectives = array('public', 'private', 'immutable');
 
     private $embeddedResponses = 0;
     private $isNotCacheableResponseEmbedded = false;
@@ -90,8 +88,8 @@ public function add(Response $response)
         $this->storeRelativeAgeDirective('s-maxage', $response->headers->getCacheControlDirective('s-maxage'), $age);
 
         $expires = $response->getExpires();
-        $expires = null === $expires ? null : $expires->format('U') - $response->getDate()->format('U');
-        $this->storeRelativeAgeDirective('expires', $expires < 0 ? null : $expires, 0);
+        $expires = null !== $expires ? $expires->format('U') - $response->getDate()->format('U') : null;
+        $this->storeRelativeAgeDirective('expires', $expires >= 0 ? $expires : null, 0);
     }
 
     /**
@@ -146,8 +144,6 @@ public function update(Response $response)
      *
      * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.4
      *
-     * @param Response $response
-     *
      * @return bool
      */
     private function isUncacheable(Response $response)
@@ -165,7 +161,7 @@ private function isUncacheable(Response $response)
         // A response received with any other status code (e.g. status codes 302 and 307)
         // MUST NOT be returned in a reply to a subsequent request unless there are
         // cache-control directives or another header(s) that explicitly allow it.
-        $cacheControl = ['max-age', 's-maxage', 'must-revalidate', 'proxy-revalidate', 'public', 'private', 'must-revalidate'];
+        $cacheControl = array('max-age', 's-maxage', 'must-revalidate', 'proxy-revalidate', 'public', 'private', 'must-revalidate');
         foreach ($cacheControl as $key) {
             if ($response->headers->hasCacheControlDirective($key)) {
                 return false;
@@ -194,7 +190,7 @@ private function storeRelativeAgeDirective($cacheKey, $value, $age)
 
         if (false !== $this->ageDirectives[$cacheKey]) {
             $value = $value - $age;
-            $this->ageDirectives[$cacheKey] = null === $this->ageDirectives[$cacheKey] ? $value : min($this->ageDirectives[$cacheKey], $value);
+            $this->ageDirectives[$cacheKey] = null !== $this->ageDirectives[$cacheKey] ? min($this->ageDirectives[$cacheKey], $value) : $value;
         }
     }
 }