欢迎使用CSDN-markdown编辑器

//获取用户ip(外网ip 服务器上可以获取用户外网Ip 本机ip地址只能获取127.0.0.1)function getIp(){    if(!empty($_SERVER["HTTP_CLIENT_IP"])){    　　$cip = $_SERVER["HTTP_CLIENT_IP"];    }else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])){    　　$cip = $_SERVER["HTTP_X_FORWARDED_FOR"];    }else if(!empty($_SERVER["REMOTE_ADDR"])){    　　$cip = $_SERVER["REMOTE_ADDR"];    }else{    　　$cip = '';    }    preg_match("/[\d\.]{7,15}/", $cip, $cips);    $cip = isset($cips[0]) ? $cips[0] : 'unknown';    unset($cips);    return $cip;}