获取客户端ip

function getIp(){ $onlineip=''; if(getenv('HTTP_CLIENT_IP')&&strcasecmp(getenv('HTTP_CLIENT_IP'),'unknown')){ $onlineip=getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR')&&strcasecmp(getenv('HTTP_X_FORWARDED_FOR'),'unknown')){ $onlineip=getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR')&&strcasecmp(getenv('REMOTE_ADDR'),'unknown')){ $onlineip=getenv('REMOTE_ADDR'); } elseif(isset($_SERVER['REMOTE_ADDR'])&&$_SERVER['REMOTE_ADDR']&&strcasecmp($_SERVER['REMOTE_ADDR'],'unknown')){ $onlineip=$_SERVER['REMOTE_ADDR']; } return $onlineip; }

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