Fix probable bugs; Clean up style

src/Curl/Curl.php

@@ -2,6 +2,8 @@
 
 namespace Curl;
 
+use Curl\ArrayUtil;
+
 class Curl
 {
     const VERSION = '7.1.0';
@@ -148,8 +150,8 @@ class Curl
                 // Manually build a single-dimensional array from a multi-dimensional array as using curl_setopt($ch,
                 // CURLOPT_POSTFIELDS, $data) doesn't correctly handle multi-dimensional arrays when files are
                 // referenced.
-                if (\Curl\ArrayUtil::is_array_multidim($data)) {
-                    $data = \Curl\ArrayUtil::array_flatten_multidim($data);
+                if (ArrayUtil::is_array_multidim($data)) {
+                    $data = ArrayUtil::array_flatten_multidim($data);
                 }
 
                 // Modify array values to ensure any referenced files are properly handled depending on the support of

src/Curl/MultiCurl.php

@@ -453,12 +453,10 @@ class MultiCurl
      *
      * @access public
      * @param  $string
-     *
-     * @return bool
      */
     public function setCookieString($string)
     {
-        return $this->setOpt(CURLOPT_COOKIE, $string);
+        $this->setOpt(CURLOPT_COOKIE, $string);
     }
 
     /**
@@ -466,12 +464,10 @@ class MultiCurl
      *
      * @access public
      * @param  $cookie_file
-     *
-     * @return boolean
      */
     public function setCookieFile($cookie_file)
     {
-        return $this->setOpt(CURLOPT_COOKIEFILE, $cookie_file);
+        $this->setOpt(CURLOPT_COOKIEFILE, $cookie_file);
     }
 
     /**
@@ -479,12 +475,10 @@ class MultiCurl
      *
      * @access public
      * @param  $cookie_jar
-     *
-     * @return boolean
      */
     public function setCookieJar($cookie_jar)
     {
-        return $this->setOpt(CURLOPT_COOKIEJAR, $cookie_jar);
+        $this->setOpt(CURLOPT_COOKIEJAR, $cookie_jar);
     }
 
     /**
@@ -798,7 +792,6 @@ class MultiCurl
         }
 
         $this->activeCurls[$curl->id] = $curl;
-        $this->responseCookies = array();
         $curl->call($curl->beforeSendFunction);
     }
 }