Added ability to get headers as associative array

lib/Client.php

@@ -166,6 +166,7 @@ public function makeRequest($method, $url, $body = null, $headers = null)
         $responseHeaders = substr($response, 0, $headerSize);
 
         $responseHeaders = explode("\n", $responseHeaders);
+        $responseHeaders = array_map('trim', $responseHeaders);
 
         curl_close($curl);
 

lib/Response.php

@@ -64,10 +64,53 @@ public function body()
     /**
      * The response headers
      *
+     * @param bool $assoc
+     *
      * @return array
      */
-    public function headers()
+    public function headers($assoc = false)
     {
-        return $this->headers;
+        if (!$assoc) {
+            return $this->headers;
+        }
+
+        return $this->prettifyHeaders($this->headers);
+    }
+
+    /**
+      * Returns response headers as associative array
+      * 
+      * @param array $headers
+      *
+      * @return array
+      * 
+      * @throws \InvalidArgumentException
+      */
+    private function prettifyHeaders($headers)
+    {
+        if (!is_array($headers)) {
+            throw new \InvalidArgumentException('$headers should be array');
+        }
+
+        return array_reduce(
+            array_filter($headers),
+            function ($result, $header) {
+                if (empty($header)) {
+                    return $result;
+                }
+
+                if (false === strpos($header, ':')) {
+                    $result['Status'] = trim($header);
+
+                    return $result;
+                }
+
+                list ($key, $value) = explode(':', $header, 2);
+                $result[trim($key)] = trim($value);
+
+                return $result;
+            },
+            []
+        );
     }
-}
+}

test/unit/ResponseTest.php

@@ -41,4 +41,11 @@ public function testHeaders()
 
         $this->assertEquals(['Content-Type: text/html'], $response->headers());
     }
-}
+
+    public function testAssociativeHeaders()
+    {
+        $response = new Response(null, null, ['Content-Type: text/html', 'HTTP/1.1 200 OK']);
+
+        $this->assertEquals(['Content-Type' => 'text/html', 'Status' => 'HTTP/1.1 200 OK'], $response->headers(true));
+    }
+}