Fixed an issue with certain characters in the returned xml

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## 0.9.7 - TBD
+## 0.9.7 - 2020-06-24
  * Added a `$options = []` parameter to various methods
  * Made `ExchangeWebServices::drillDownResponses()` static
  * Added a `NotificationAPI::handlePushNotification()` method
@@ -11,6 +11,7 @@
  * Adding a simple usage for `setFrom`
  * `CalendarAPI::areAvailable` will now check for an error and throw a useful Exception
  * Updated the Restriction format to allow for multiple If's and nexted And's/Or's
+ * Fixed an issue with certain characters in the XML (Issue #180)
 
 ## 0.9.6 - 2018-01-26
  * Added an `options` parameter to `CalendarAPI::updateCalendarItem()`

composer.json

@@ -4,7 +4,10 @@
 	"require": {
 		"garethp/http-playback": "^1.0",
 		"ext-curl": "*",
-		"ext-soap": "*"
+		"ext-soap": "*",
+		"ext-libxml": "*",
+		"ext-dom": "*",
+		"ext-simplexml": "*"
 	},
 	"scripts": {
 		"cs": "./vendor/bin/phpcs --standard=ruleset.xml -np src/ tests/ examples/",

src/API/NTLMSoapClient.php

@@ -208,7 +208,18 @@ public function __doRequest($request, $location, $action, $version, $one_way = 0
         $this->__last_request_headers = $postOptions['headers'];
         $this->_responseCode = $response->getStatusCode();
 
-        return $response->getBody()->__toString();
+        $responseStr = $response->getBody()->__toString();
+        libxml_use_internal_errors(true);
+        $dom = new \DOMDocument("1.0", "UTF-8");
+        $dom->strictErrorChecking = false;
+        $dom->validateOnParse = false;
+        $dom->recover = true;
+        $dom->loadXML($responseStr);
+        $xml = simplexml_import_dom($dom);
+        libxml_clear_errors();
+        libxml_use_internal_errors(false);
+
+        return $xml->asXML();
     }
 
     /**