Merge pull request #17 from chrisharrison/master

Fixed an incorrect return type and removed restriction on optional parameter

Author: chrisbarr

lib/AmazonSNS.php

@@ -439,19 +439,24 @@ public function unsubscribe($subscriptionArn) {
 	 * @param string $platformApplicationArn
 	 * @param string $token
 	 * @param string $userData
-	 * @return bool
+	 * @return string
 	 * @throws InvalidArgumentException
 	 */
-	public function createPlatformEndpoint($platformApplicationArn, $token, $userData) {
-		if(empty($platformApplicationArn) || empty($token) || empty($userData)) {
-			throw new InvalidArgumentException('Must supply a PlatformApplicationArn,Token & UserData to create platform endpoint');
+	public function createPlatformEndpoint($platformApplicationArn, $token, $userData = null) {
+		if(empty($platformApplicationArn) || empty($token)) {
+			throw new InvalidArgumentException('Must supply a PlatformApplicationArn & Token to create platform endpoint');
 		}
 
-		$response = $this->_request('CreatePlatformEndpoint', array(
+		$attributes = array(
 			'PlatformApplicationArn' => $platformApplicationArn,
-			'Token' => $token,
-			'CustomUserData' => $userData
-		));
+			'Token' => $token
+		);
+
+		if(!empty($userData)) {
+			$attributes['CustomUserData'] = $userData;
+		}
+
+		$response = $this->_request('CreatePlatformEndpoint', $attributes);
 
 		return strval($response->CreatePlatformEndpointResult->EndpointArn);
 	}