Add optional JSON response format

Author: michaelbranny

PSWebServiceLibrary.php

@@ -358,7 +358,7 @@ public function add($options)
      *
      * @param array $options Array representing resource to get.
      *
-     * @return SimpleXMLElement status_code, response
+     * @return SimpleXMLElement|string status_code, response
      * @throws PrestaShopWebserviceException
      */
     public function get($options)
@@ -372,7 +372,7 @@ public function get($options)
                 $url .= '/' . $options['id'];
             }
 
-            $params = array('filter', 'display', 'sort', 'limit', 'id_shop', 'id_group_shop', 'schema', 'language', 'date', 'price');
+            $params = array('filter', 'display', 'sort', 'limit', 'id_shop', 'id_group_shop', 'schema', 'language', 'date', 'price', 'output_format');
             foreach ($params as $p) {
                 foreach ($options as $k => $o) {
                     if (strpos($k, $p) !== false) {
@@ -391,6 +391,10 @@ public function get($options)
 
         $this->checkStatusCode($request);// check the response validity
 
+        if (isset($options['output_format']) && $options['output_format'] === 'JSON') {
+            return $request['response'];
+        }
+
         return $this->parseXML($request['response']);
     }