Merge pull request #486 from Geolim4/final

Missing type hint in phpDoc

Author: Geolim4

src/phpFastCache/Drivers/Cookie/Driver.php

@@ -99,8 +99,6 @@ protected function driverWrite(CacheItemInterface $item)
     protected function driverRead(CacheItemInterface $item)
     {
         $this->driverConnect();
-        // return null if no caching
-        // return value if in caching
         $keyword = self::PREFIX . $item->getKey();
         $x = isset($_COOKIE[ $keyword ]) ? json_decode($_COOKIE[ $keyword ], true) : false;
 
@@ -116,7 +114,7 @@ protected function driverRead(CacheItemInterface $item)
     }
 
     /**
-     * @param $key
+     * @param string $key
      * @return int
      */
     protected function driverReadExpirationDate($key)