端口已处于监听状态，为什么 fsockopen还会失败,该怎么处理

端口已处于监听状态，为什么 fsockopen还会失败
用netstat -a命令查看， 显示 TCP 0.0.0.0:2012 www:0 LISTENING
可是用PHP socket访问，代码如下：

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->$fp = fsockopen('202.117.xxx.xxx',2012,$errno, $errstr, 10);echo $fp ;

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PHP code

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);   $connection = socket_connect($socket, '192.168.xxx.xxx', 2012);<div class="clear">
                 
              
              
        
            </div>

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