diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..21f0facd
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,21 @@
+language: php
+php:
+  - '5.4'
+  - '5.5'
+  - '5.6'
+  - '7.0'
+  - '7.1'
+# - hhvm # on Trusty only
+# - nightly
+before_install:
+  - nvm install 6.11
+install: 
+  - composer install
+  - npm install -g mongodb-runner
+  - npm install
+before_script:
+  - mongodb-runner --start
+script:
+  - nohup npm start 1>&2 &
+  - sleep 10
+  - ./vendor/bin/phpunit
diff --git a/src/Parse/ParseClient.php b/src/Parse/ParseClient.php
index 7f439d87..6fd38c1c 100755
--- a/src/Parse/ParseClient.php
+++ b/src/Parse/ParseClient.php
@@ -497,7 +497,7 @@ public static function _request(
         if(!isset($decoded) && $response !== '') {
             throw new ParseException(
                 'Bad Request. Could not decode Response: '.
-                '('.json_last_error().') '.json_last_error_msg(),
+                '('.json_last_error().') '.self::getLastJSONErrorMsg(),
                 -1
             );
 
@@ -522,6 +522,35 @@ public static function _request(
 
     }
 
+    /**
+     * Returns the last error message from a failed json_decode call
+     *
+     * @return string
+     */
+    private static function getLastJSONErrorMsg()
+    {
+        // check if json_last_error_msg is defined (>= 5.5.0)
+        if (!function_exists('json_last_error_msg')) {
+            // return custom error messages for each code
+            $error_strings = array(
+                JSON_ERROR_NONE             => 'No error',
+                JSON_ERROR_DEPTH            => 'Maximum stack depth exceeded',
+                JSON_ERROR_STATE_MISMATCH   => 'State mismatch (invalid or malformed JSON)',
+                JSON_ERROR_CTRL_CHAR        => 'Control character error, potentially incorrectly encoded',
+                JSON_ERROR_SYNTAX           => 'Syntax error',
+                JSON_ERROR_UTF8             => 'Malformed UTF-8 characters, potentially incorrectly encoded'
+            );
+
+            $error = json_last_error();
+            return isset($error_strings[$error]) ? $error_strings[$error] : 'Unknown error';
+
+        }
+
+        // use existing function
+        return json_last_error_msg();
+
+    }
+
     /**
      * ParseClient::setStorage, will update the storage object used for
      * persistence.
diff --git a/tests/Parse/AddOperationTest.php b/tests/Parse/AddOperationTest.php
index 3c28bcfe..3ff30827 100644
--- a/tests/Parse/AddOperationTest.php
+++ b/tests/Parse/AddOperationTest.php
@@ -40,7 +40,7 @@ public function testAddOperation()
      */
     public function testBadObjects()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'AddOperation requires an array.');
         new AddOperation('not an array');
 
@@ -84,7 +84,7 @@ public function testMergePrevious()
      */
     public function testInvalidMerge()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Operation is invalid after previous operation.');
         $addOp = new AddOperation([
             'key1'          => 'value1'
diff --git a/tests/Parse/AddUniqueOperationTest.php b/tests/Parse/AddUniqueOperationTest.php
index ab120ec2..629fbbba 100644
--- a/tests/Parse/AddUniqueOperationTest.php
+++ b/tests/Parse/AddUniqueOperationTest.php
@@ -50,7 +50,7 @@ public function testAddUniqueOp()
      */
     public function testBadObjects()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'AddUniqueOperation requires an array.');
         $addUnique = new AddUniqueOperation('not-an-array');
 
@@ -114,7 +114,7 @@ public function testMergePrevious()
      */
     public function testInvalidMerge()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Operation is invalid after previous operation.');
         $addOp = new AddUniqueOperation([
             'key1'          => 'value1'
diff --git a/tests/Parse/IncrementOperationTest.php b/tests/Parse/IncrementOperationTest.php
index dd0f000d..76601971 100644
--- a/tests/Parse/IncrementOperationTest.php
+++ b/tests/Parse/IncrementOperationTest.php
@@ -62,7 +62,7 @@ public function testMergePrevious()
      */
     public function testInvalidMerge()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Operation is invalid after previous operation.');
         $addOp = new IncrementOperation();
         $addOp->_mergeWithPrevious(new AddOperation(['key'  => 'value']));
diff --git a/tests/Parse/ParseClientTest.php b/tests/Parse/ParseClientTest.php
index 910171ac..eacfe0ee 100644
--- a/tests/Parse/ParseClientTest.php
+++ b/tests/Parse/ParseClientTest.php
@@ -71,7 +71,7 @@ public function testParseNotInitialized() {
      * @group client-not-initialized
      */
     public function testAppNotNotInitialized() {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'You must call Parse::initialize(..., $accountKey) before making any app requests. '.
             'Your account key must not be null or empty.'
         );
@@ -508,7 +508,7 @@ public function testStreamCAFile()
      */
     public function testBadApiResponse()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Bad Request. Could not decode Response: (4) Syntax error');
 
         $httpClient = ParseClient::getHttpClient();
diff --git a/tests/Parse/ParseCurlTest.php b/tests/Parse/ParseCurlTest.php
index 45b2e7bf..f92b6396 100644
--- a/tests/Parse/ParseCurlTest.php
+++ b/tests/Parse/ParseCurlTest.php
@@ -16,7 +16,7 @@ class ParseCurlTest extends \PHPUnit_Framework_TestCase
 {
     public function testBadExec()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -26,7 +26,7 @@ public function testBadExec()
 
     public function testBadSetOption()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -36,7 +36,7 @@ public function testBadSetOption()
 
     public function testBadSetOptionsArray()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -46,7 +46,7 @@ public function testBadSetOptionsArray()
 
     public function testBadGetInfo()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -56,7 +56,7 @@ public function testBadGetInfo()
 
     public function testBadGetError()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -66,7 +66,7 @@ public function testBadGetError()
 
     public function testBadErrorCode()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
@@ -76,7 +76,7 @@ public function testBadErrorCode()
 
     public function testBadClose()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'You must call ParseCurl::init first');
 
         $parseCurl = new ParseCurl();
diff --git a/tests/Parse/ParseInstallationTest.php b/tests/Parse/ParseInstallationTest.php
index 3c732de4..bfef41c9 100644
--- a/tests/Parse/ParseInstallationTest.php
+++ b/tests/Parse/ParseInstallationTest.php
@@ -23,7 +23,7 @@ public function tearDown()
      */
     public function testMissingIdentifyingField()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'at least one ID field (deviceToken, installationId) must be specified in this operation');
 
         (new ParseInstallation())->save();
@@ -34,7 +34,7 @@ public function testMissingIdentifyingField()
      */
     public function testMissingDeviceType()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'deviceType must be specified in this operation');
 
         $installation = new ParseInstallation();
@@ -48,7 +48,7 @@ public function testMissingDeviceType()
      */
     public function testClientsCannotFindWithoutMasterKey()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Clients aren\'t allowed to perform the find operation on the installation collection.');
 
         $query = ParseInstallation::query();
@@ -66,7 +66,7 @@ public function testClientsCannotDestroyWithoutMasterKey()
         $installation->set('deviceType', 'android');
         $installation->save();
 
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             "Clients aren't allowed to perform the delete operation on the installation collection.");
 
         // try destroying, without using the master key
diff --git a/tests/Parse/ParsePushTest.php b/tests/Parse/ParsePushTest.php
index 68f1679f..0675cbe8 100644
--- a/tests/Parse/ParsePushTest.php
+++ b/tests/Parse/ParsePushTest.php
@@ -21,7 +21,7 @@ public function tearDown()
     }
 
     public function testNoMasterKey() {
-        $this->setExpectedException(ParseException::class);
+        $this->setExpectedException('\Parse\ParseException');
 
         ParsePush::send(
             [
@@ -46,7 +46,7 @@ public function testBasicPush()
      */
     public function testMissingWhereAndChannels()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             "Sending a push requires either \"channels\" or a \"where\" query.");
 
         ParsePush::send([
@@ -62,7 +62,7 @@ public function testMissingWhereAndChannels()
      */
     public function testWhereAndChannels()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             "Channels and query can not be set at the same time.");
 
         $query = ParseInstallation::query();
@@ -108,7 +108,7 @@ public function testPushToQueryWithoutWhere()
 
     public function testNonQueryWhere()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Where parameter for Parse Push must be of type ParseQuery');
         ParsePush::send(
             [
@@ -133,7 +133,7 @@ public function testPushDates()
 
     public function testExpirationTimeAndIntervalSet()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Both expiration_time and expiration_interval can\'t be set.');
         ParsePush::send(
             [
diff --git a/tests/Parse/ParseQueryTest.php b/tests/Parse/ParseQueryTest.php
index bea05d25..73a680c0 100644
--- a/tests/Parse/ParseQueryTest.php
+++ b/tests/Parse/ParseQueryTest.php
@@ -2243,7 +2243,7 @@ public function testAscendingByArray() {
 
     public function testOrQueriesVaryingClasses()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'All queries must be for the same class');
         ParseQuery::orQueries([
             new ParseQuery('Class1'),
@@ -2275,7 +2275,7 @@ public function testSetConditions()
 
     public function testBadConditions()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             "Conditions must be in an array");
 
         $query = new ParseQuery('TestObject');
diff --git a/tests/Parse/ParseRelationOperationTest.php b/tests/Parse/ParseRelationOperationTest.php
index 2f52605b..fe4b5a9f 100644
--- a/tests/Parse/ParseRelationOperationTest.php
+++ b/tests/Parse/ParseRelationOperationTest.php
@@ -30,7 +30,7 @@ public function tearDown()
      */
     public function testMissingObjects()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Cannot create a ParseRelationOperation with no objects.');
         new ParseRelationOperation(null, null);
 
@@ -41,7 +41,7 @@ public function testMissingObjects()
      */
     public function testMixedClasses()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'All objects in a relation must be of the same class.');
 
         $objects = [];
@@ -78,7 +78,7 @@ public function testSingleObjects()
      */
     public function testApplyDifferentClassRelation()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Related object object must be of class '
             .'Class1, but DifferentClass'
             .' was passed in.');
@@ -96,7 +96,7 @@ public function testApplyDifferentClassRelation()
      */
     public function testInvalidApply()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Operation is invalid after previous operation.');
         $addObj = new ParseObject('Class1');
         $op = new ParseRelationOperation($addObj, null);
@@ -120,7 +120,7 @@ public function testMergeNone()
      */
     public function testMergeDifferentClass()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Related object object must be of class '
             .'Class1, but AnotherClass'
             .' was passed in.');
@@ -140,7 +140,7 @@ public function testMergeDifferentClass()
      */
     public function testInvalidMerge()
     {
-        $this->setExpectedException(\Exception::class,
+        $this->setExpectedException('\Exception',
             'Operation is invalid after previous operation.');
         $obj = new ParseObject('Class1');
         $op = new ParseRelationOperation($obj, null);
diff --git a/tests/Parse/ParseRoleTest.php b/tests/Parse/ParseRoleTest.php
index e2b82ff2..0ee7c347 100644
--- a/tests/Parse/ParseRoleTest.php
+++ b/tests/Parse/ParseRoleTest.php
@@ -235,7 +235,7 @@ public function createEden()
 
     public function testSettingNonStringAsName()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             "A role's name must be a string.");
         $role = new ParseRole();
         $role->setName(12345);
@@ -247,7 +247,7 @@ public function testSettingNonStringAsName()
      */
     public function testSavingWithoutName()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Roles must have a name.');
         $role = new ParseRole();
         $role->setACL(new ParseACL());
diff --git a/tests/Parse/ParseSchemaTest.php b/tests/Parse/ParseSchemaTest.php
index 75c90bf6..3c13c3f8 100644
--- a/tests/Parse/ParseSchemaTest.php
+++ b/tests/Parse/ParseSchemaTest.php
@@ -334,7 +334,7 @@ public function testInvalidTypeException()
      */
     public function testBadSchemaGet()
     {
-        $this->setExpectedException(ParseException::class);
+        $this->setExpectedException('\Parse\ParseException');
 
         $user = new ParseUser();
         $user->setUsername('schema-user');
@@ -351,7 +351,7 @@ public function testBadSchemaGet()
      */
     public function testBadSchemaSave()
     {
-        $this->setExpectedException(ParseException::class);
+        $this->setExpectedException('\Parse\ParseException');
 
         $user = new ParseUser();
         $user->setUsername('schema-user');
@@ -368,7 +368,7 @@ public function testBadSchemaSave()
      */
     public function testBadSchemaUpdate()
     {
-        $this->setExpectedException(ParseException::class);
+        $this->setExpectedException('\Parse\ParseException');
 
         $user = new ParseUser();
         $user->setUsername('schema-user');
@@ -385,7 +385,7 @@ public function testBadSchemaUpdate()
      */
     public function testBadSchemaDelete()
     {
-        $this->setExpectedException(ParseException::class);
+        $this->setExpectedException('\Parse\ParseException');
 
         $user = new ParseUser();
         $user->setUsername('schema-user');
diff --git a/tests/Parse/ParseSessionStorageAltTest.php b/tests/Parse/ParseSessionStorageAltTest.php
index 6ebdd013..7d66a1f1 100644
--- a/tests/Parse/ParseSessionStorageAltTest.php
+++ b/tests/Parse/ParseSessionStorageAltTest.php
@@ -19,7 +19,7 @@ class ParseSessionStorageAltTest extends \PHPUnit_Framework_TestCase
      */
     public function testNoSessionActive()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'PHP session_start() must be called first.');
         new ParseSessionStorage();
 
diff --git a/tests/Parse/ParseStreamHttpClientTest.php b/tests/Parse/ParseStreamHttpClientTest.php
index e98a9952..2637afa8 100644
--- a/tests/Parse/ParseStreamHttpClientTest.php
+++ b/tests/Parse/ParseStreamHttpClientTest.php
@@ -34,7 +34,7 @@ public function testInvalidUrl()
     {
         $url = 'http://example.com/lots of spaces here';
 
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Url may not contain spaces for stream client: '
             .$url);
 
diff --git a/tests/Parse/RemoveOperationTest.php b/tests/Parse/RemoveOperationTest.php
index d0eabce3..577fa6f1 100644
--- a/tests/Parse/RemoveOperationTest.php
+++ b/tests/Parse/RemoveOperationTest.php
@@ -22,7 +22,7 @@ class RemoveOperationTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingArray()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'RemoveOperation requires an array.');
         new RemoveOperation('not an array');
 
@@ -65,7 +65,7 @@ public function testMergePrevious()
      */
     public function testInvalidMerge()
     {
-        $this->setExpectedException(ParseException::class,
+        $this->setExpectedException('\Parse\ParseException',
             'Operation is invalid after previous operation.');
         $removeOp = new RemoveOperation([
             'key1'          => 'value1'