websockets socket_select錯誤

Question

你好我試圖實現客戶端和服務器之間的websocket通信。問題是，當IM特林啓動服務器即時得到這個錯誤在命令行

# php -q htdocs\socket\server\startDaemon.php 
2012-07-23 10:10:02 System: Socket Resource id #7 cre 
2012-07-23 10:10:02 System: Socket bound to localhost 
2012-07-23 10:10:02 System: Start listening on Socket 

Strict Standards: Only variables should be passed by reference in 
C:\xampp\htdocs\socket\server\socketWebSocket.class.php on line 35 

第35行的代碼是上面：

$num_sockets = socket_select($changed_sockets,$write=NULL,$exceptions=NULL,NULL); 

...我已經尋找答案，但還沒有任何作品。有誰能夠幫助我？感謝名單

Answer 1

嘗試

$write=NULL; 
$exceptions=NULL; 

$num_sockets = socket_select($changed_sockets,$write,$exceptions, NULL);