Merge pull request #89 from simaranjit/JsonFailureLog

json_encode might fail and that should be logged

lib/Pusher.php

@@ -18,6 +18,7 @@
 		+ Zack Kitzmiller (delicious@zackisamazing.com)
 		+ Andrew Bender (igothelp@gmail.com)
 		+ Phil Leggetter (phil@leggetter.co.uk)
+		+ Simaranjit Singh (simaranjit.singh@virdi.me)
 */
 
 class PusherException extends Exception
@@ -363,6 +364,11 @@ public function trigger( $channels, $event, $data, $socket_id = null, $debug = f
 
 		$data_encoded = $already_encoded ? $data : json_encode( $data );
 
+		// json_encode might return false on failure
+		if (!$data_encoded) {
+			$this->Log('Failed to perform json_encode on the the provided data: ' . print_r( $data, true ));
+		}
+
 		$post_params = array();
 		$post_params[ 'name' ] = $event;
 		$post_params[ 'data' ] = $data_encoded;