我在Internet webserver中执行我的PHP脚本时收到此警告消息,但在本地wamp中它正在运行而没有警告.是什么原因 ？
Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/deport/public_html/abc/index.php on line 209