diff --git a/library/Requests.php b/library/Requests.php
index bb266189c..38551fc00 100644
--- a/library/Requests.php
+++ b/library/Requests.php
@@ -258,15 +258,41 @@ public static function trace($url, $headers = array(), $options = array()) {
 	 * @param string $url
 	 * @param array $headers
 	 * @param array $data
+	 * @param array $files
 	 * @param array $options
 	 * @return Requests_Response
 	 */
 	/**
-	 * Send a POST request
-	 */
-	public static function post($url, $headers = array(), $data = array(), $options = array()) {
-		return self::request($url, $headers, $data, self::POST, $options);
-	}
+	 * Send a POST request/Support for multiple files, complex array parameters
+	 */
+    public static function post($url, $headers = [], $data = [], $files = [], $options = []){
+        if (count($files)) {
+            self::httpBuildQuery($data);
+            // replacing file paths with curlFile Object
+            array_walk($files, function ($filePath, $key) use (&$data) {
+                if (is_array($filePath)) {
+                    array_walk($filePath, function ($subFilePath, $subKey) use (&$data, $key) {
+                        $data["{$key}[{$subKey}]"] = new \CURLFile(realpath($subFilePath));
+                    });
+                } else {
+                    $data[ $key ] = new \CURLFile(realpath($filePath));
+                }
+            });
+
+            // starting to add a hook to attach file to request
+            $hooks = new \Requests_Hooks();
+            $hooks->register('curl.before_send', function ($fp) use ($data) {
+                curl_setopt($fp, CURLOPT_SAFE_UPLOAD, true);
+                curl_setopt($fp, CURLOPT_POSTFIELDS, $data);
+            });
+            $options = ['hooks' => $hooks];
+            // no need to set the body, it's taken care of by hooks
+            $data = [];
+        }
+
+        return self::request($url, $headers, $data, self::POST, $options);
+    }
+	
 	/**
 	 * Send a PUT request
 	 */
@@ -977,4 +1003,16 @@ public static function match_domain($host, $reference) {
 
 		return false;
 	}
+	
+    protected static function httpBuildQuery(array &$data, $key = '', $value = null) {
+        foreach ($value ?? $data as $k => $v) {
+            $cur_key = $key ? "{$key}[{$k}]" : "{$k}";
+            if (is_array($v)) {
+                self::httpBuildQuery($data, "{$cur_key}", $v);
+                unset($data[$k]);
+            }else{
+                $data[$cur_key] = $v;
+            }
+        }
+    }
 }
diff --git a/tests/Transport/Base.php b/tests/Transport/Base.php
index 566e09fad..4f5604228 100644
--- a/tests/Transport/Base.php
+++ b/tests/Transport/Base.php
@@ -160,7 +160,7 @@ public function testTRACE() {
 
 	public function testRawPOST() {
 		$data = 'test';
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions());
+		$request = Requests::post(httpbin('/post'), array(), $data,['fiilename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions());
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);
@@ -169,7 +169,7 @@ public function testRawPOST() {
 
 	public function testFormPost() {
 		$data = 'test=true&test2=test';
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions());
+		$request = Requests::post(httpbin('/post'), array(), $data,['fiilename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions());
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);
@@ -181,7 +181,7 @@ public function testPOSTWithArray() {
 			'test' => 'true',
 			'test2' => 'test',
 		);
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions());
+		$request = Requests::post(httpbin('/post'), array(), $data,['fiilename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions());
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);
@@ -196,7 +196,7 @@ public function testPOSTWithNestedData() {
 				'test4' => 'test-too',
 			),
 		);
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions());
+		$request = Requests::post(httpbin('/post'), array(), $data,['fiilename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions());
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);
@@ -828,7 +828,7 @@ public function testReusableTransport() {
 
 	public function testQueryDataFormat() {
 		$data = array('test' => 'true', 'test2' => 'test');
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions(array('data_format' => 'query')));
+		$request = Requests::post(httpbin('/post'), array(), $data,['filename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions(array('data_format' => 'query')));
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);
@@ -838,7 +838,7 @@ public function testQueryDataFormat() {
 
 	public function testBodyDataFormat() {
 		$data = array('test' => 'true', 'test2' => 'test');
-		$request = Requests::post(httpbin('/post'), array(), $data, $this->getOptions(array('data_format' => 'body')));
+		$request = Requests::post(httpbin('/post'), array(), $data,['filename' => tempnam(sys_get_temp_dir(), 'RLT')], $this->getOptions(array('data_format' => 'body')));
 		$this->assertEquals(200, $request->status_code);
 
 		$result = json_decode($request->body, true);