[php] fixed sys.net.Socket.bind() (fixes #6693)

extra/CHANGES.txt

@@ -13,6 +13,7 @@
 	js : fixed saving setter to `tmp` var before invocation (#6672)
 	php : don't fail on generating import aliases for classes with the similar names (#6680)
 	php : fixed `Sys.environment()` to also return variables set by `Sys.putEnv()`
+	php : fixed `sys.net.Socket.bind()` (6693)
 
 2017-10-08: 4.0.0-preview.2
 

std/php/_std/sys/net/Socket.hx

@@ -92,7 +92,7 @@ class Socket {
 		var errs = Boot.deref(null);
 		var errn = Boot.deref(null);
 		var r = stream_socket_server(
-			protocol + '://' + host.ip + ':' + port,
+			protocol + '://' + host.host + ':' + port,
 			errn,
 			errs,
 			(protocol == "udp" ? STREAM_SERVER_BIND : STREAM_SERVER_BIND | STREAM_SERVER_LISTEN)