diff --git a/main/mashape/auth/Auth.php b/main/mashape/auth/Auth.php
new file mode 100644
index 0000000..e45156a
--- /dev/null
+++ b/main/mashape/auth/Auth.php
@@ -0,0 +1,7 @@
+<?php
+interface Auth {
+	public function handleHeader();
+
+	public function handleParams();
+}
+?>
diff --git a/main/mashape/auth/BasicAuth.php b/main/mashape/auth/BasicAuth.php
new file mode 100644
index 0000000..571f8fc
--- /dev/null
+++ b/main/mashape/auth/BasicAuth.php
@@ -0,0 +1,24 @@
+<?php
+require_once(dirname(__FILE__) . "/HeaderAuth.php");
+
+class BasicAuth extends HeaderAuth {
+
+	private $header;
+
+	function __construct($username, $password) {
+		$headerValue = $username . ":" . $password;
+		$this->header = "Authorization: " . base64_encode($headerValue);
+	}
+
+	public function handleHeader() {
+		return $this->header;
+	}
+
+	public function handleParams() {
+		return null;
+	}
+}
+?>
+
+
+
diff --git a/main/mashape/auth/CustomHeaderAuth.php b/main/mashape/auth/CustomHeaderAuth.php
new file mode 100644
index 0000000..67bea55
--- /dev/null
+++ b/main/mashape/auth/CustomHeaderAuth.php
@@ -0,0 +1,22 @@
+<?php
+require_once(dirname(__FILE__) . "/HeaderAuth.php");
+
+class CustomHeaderAuth extends HeaderAuth {
+
+	private $header;
+
+	function __construct($headerName, $headerValue) {
+		$this->header = $headerName . ": " . $headerValue;
+	}
+
+	public function handleHeader() {
+		return $this->header;
+	}
+
+	public function handleParams() {
+		return null;
+	}
+}
+?>
+
+
diff --git a/main/mashape/auth/HeaderAuth.php b/main/mashape/auth/HeaderAuth.php
new file mode 100644
index 0000000..c23c0d7
--- /dev/null
+++ b/main/mashape/auth/HeaderAuth.php
@@ -0,0 +1,9 @@
+<?php
+require_once(dirname(__FILE__) . "/Auth.php");
+
+abstract class HeaderAuth implements Auth {
+	public function handleParams() {
+		return null;
+	}
+}
+?>
diff --git a/main/mashape/auth/MashapeAuth.php b/main/mashape/auth/MashapeAuth.php
new file mode 100644
index 0000000..6485ff4
--- /dev/null
+++ b/main/mashape/auth/MashapeAuth.php
@@ -0,0 +1,18 @@
+<?php
+require_once(dirname(__FILE__) . "/../http/AuthUtil.php");
+require_once(dirname(__FILE__) . "/HeaderAuth.php");
+
+class MashapeAuth extends HeaderAuth {
+
+	private $header;
+
+	function __construct($publicKey, $privateKey) {
+		$this->header = AuthUtil::generateAuthenticationHeader($publicKey, $privateKey);
+	}
+
+	public function handleHeader() {
+		return $this->header;
+	}
+}
+?>
+
diff --git a/main/mashape/auth/QueryAuth.php b/main/mashape/auth/QueryAuth.php
new file mode 100644
index 0000000..26ad61a
--- /dev/null
+++ b/main/mashape/auth/QueryAuth.php
@@ -0,0 +1,21 @@
+<?php
+require_once(dirname(__FILE__) . "/Auth.php");
+
+class QueryAuth implements Auth {
+
+	private $params;
+
+	function __construct($queryKey, $queryValue) {
+		$this->params = array($queryKey => $queryValue);
+	}
+
+	public function handleHeader() {
+		return null;
+	}
+
+	public function handleParams() {
+		return $this->params;
+	}
+}
+?>
+
diff --git a/main/mashape/http/HttpClient.php b/main/mashape/http/HttpClient.php
index c526ba1..b5a8ef2 100755
--- a/main/mashape/http/HttpClient.php
+++ b/main/mashape/http/HttpClient.php
@@ -30,19 +30,22 @@ require_once(dirname(__FILE__) . "/../exceptions/MashapeClientException.php");
 require_once(dirname(__FILE__) . "/HttpMethod.php");
 require_once(dirname(__FILE__) . "/UrlUtils.php");
 require_once(dirname(__FILE__) . "/AuthUtil.php");
+require_once(dirname(__FILE__) . "/../auth/HeaderAuth.php");
+require_once(dirname(__FILE__) . "/../auth/BasicAuth.php");
+require_once(dirname(__FILE__) . "/../auth/CustomHeaderAuth.php");
+require_once(dirname(__FILE__) . "/../auth/MashapeAuth.php");
+require_once(dirname(__FILE__) . "/../auth/QueryAuth.php");
 
 class HttpClient {
 
-	public static function doRequest($httpMethod, $url, $parameters, $publicKey, $privateKey, $encodeJson = true) {
+	public static function doRequest($httpMethod, $url, $parameters, $authHandlers, $encodeJson = true) {
 		
 		if (!($httpMethod == HttpMethod::DELETE || $httpMethod == HttpMethod::GET ||
 		$httpMethod == HttpMethod::POST || $httpMethod == HttpMethod::PUT)) {
 			throw new MashapeClientException(EXCEPTION_NOTSUPPORTED_HTTPMETHOD, EXCEPTION_NOTSUPPORTED_HTTPMETHOD_CODE);
 		}
 		
-		UrlUtils::prepareRequest($url, $parameters, ($httpMethod != HttpMethod::GET) ? true : false);
-		
-		$response = self::execRequest($httpMethod, $url, $parameters, $publicKey, $privateKey);
+		$response = self::execRequest($httpMethod, $url, $parameters, $authHandlers);
 
 		if (!$encodeJson) {
 			return $response;
@@ -60,18 +63,26 @@ class HttpClient {
 		return $jsonResponse;
 	}
 
-	private static function execRequest($httpMethod, $url, $parameters, $publicKey, $privateKey) {
+	private static function execRequest($httpMethod, $url, $parameters, $authHandlers) {
 		$data = null;
+		
+		$headers = array();
+        $headers[] = UrlUtils::generateClientHeaders();
+		// Authentication
+		foreach($authHandlers as $handler) {
+			if ($handler instanceof QueryAuth) {
+				$parameters = array_merge($parameters, $handler->handleParams());
+			} else if ($handler instanceof HeaderAuth) {
+				$headers[] = $handler->handleHeader();
+			}
+		}
+		
+		UrlUtils::prepareRequest($url, $parameters, ($httpMethod != HttpMethod::GET) ? true : false);
+
 		if ($httpMethod != HttpMethod::GET) {
             //$url = self::removeQueryString($url);
 			$data = http_build_query($parameters);
 		}
-		
-        //$headers = array();
-        $headers = array(
-        );
-        $headers[] = AuthUtil::generateAuthenticationHeader($publicKey, $privateKey);
-        $headers[] = UrlUtils::generateClientHeaders();
 
         $ch = curl_init ();
 
diff --git a/main/mashape/http/UrlUtils.php b/main/mashape/http/UrlUtils.php
index 9449894..128703c 100755
--- a/main/mashape/http/UrlUtils.php
+++ b/main/mashape/http/UrlUtils.php
@@ -42,12 +42,6 @@ class UrlUtils {
 			}
 		}
 
-		if ($addRegularQueryStringParameters) {
-			// Get regular query string parameters
-			self::addRegularQueryStringParameters($url, $parameters);
-		}
-
-
 		$finalUrl = $url;
 		$matches = null;
 		$match = preg_match_all(PLACEHOLDER_REGEX, $url, $matches);
@@ -67,6 +61,17 @@ class UrlUtils {
 
 		$finalUrl = preg_replace("/\?&/", "?", $finalUrl);
 		$finalUrl = preg_replace("/\?$/", "", $finalUrl);
+
+		if ($addRegularQueryStringParameters) {
+			// Get regular query string parameters
+			self::addRegularQueryStringParameters($finalUrl, $parameters);
+		} else {
+			foreach ($parameters as $paramKey => $paramValue) {
+				$delimiter = (strpos($finalUrl, "?") === false) ? "?" : "&";
+				$finalUrl .= $delimiter . $paramKey . "=" . $paramValue;
+			}
+		}
+
 		$url = $finalUrl;
 	}