获取本机外网,PHP中限制IP段访问代码10bet手机官网
分类:web前端

获取IP有两种方法,复杂的被我注释掉了,如果你想使用复杂的,去掉注释,再把简单的注释掉就可以了。

大家一般都是用$_SERVER['REMOTE_ADDR']来获取用户IP,

复制代码代码如下:
// 复杂获取本地ip地址
/* if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
$SA_IP = getenv('HTTP_CLIENT_IP');
} elseif (getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
$SA_IP = getenv('HTTP_X_FORWARDED_FOR');
} elseif (getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
$SA_IP = getenv('REMOTE_ADDR');
} elseif (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
$SA_IP = $_SERVER['REMOTE_ADDR'];
} */
$SA_IP=$_SERVER['REMOTE_ADDR'];//简单获取本地ip地址
//定义一个函数根据ip获取城市名,使用新浪的天气预报
function getIPLoc_sina($queryIP){
$url = '' . $queryIP;
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_ENCODING, 'utf8');
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$location = curl_exec($ch);
$location = json_decode($location);
curl_close($ch);
$loc = "";
if ($location === FALSE)
return "";
if (empty($location->desc)) {
$loc = $location->city;
$full_loc = $location->province . $location->city . $location->district . $location->isp;
} else {
$loc = $location->desc;
}
return $loc;
}
$city = getIPLoc_sina("$SA_IP");

但是如果使用了反向代理的,HTTP头中REMOTE_ADDR就不是用户的地址,反而是上一级代理的地址了。

<?php
//加IP访问限制
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
$userip = getenv('HTTP_CLIENT_IP');
} elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
$userip = getenv('HTTP_X_FORWARDED_FOR');
} elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
$userip = getenv('REMOTE_ADDR');
} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
$userip = $_SERVER['REMOTE_ADDR'];
}
//限制ip
if ($userip=='127.0.0.1'){
header("location:
exit;
}
?>

$citycode = mb_convert_encoding($city, "gb2312", "utf-8");

经过我的研究有两种方法来获取用户的真实外网IP。

$doc = new DOMDocument();
if (!@$doc->load("http://php.weather.sina.com.cn/xml.php?city=" . $citycode . "&password=DJOYnieT8234jlsK&day=0")) {
echo "Get data failed!!n";
return;
}

方法一:curl
复制代码 代码如下:
function get_onlineip() {
$ch = curl_init('');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$a = curl_exec($ch);
preg_match('/[(.*)]/', $a, $ip);
return $ip[1];
}

$city = $doc->getElementsByTagName("city")->item(0)->nodeValue;
$stat1 = $doc->getElementsByTagName("status1")->item(0)->nodeValue;
$chy_shuoming = $doc->getElementsByTagName("chy_shuoming")->item(0)->nodeValue;
$tmp1 = $doc->getElementsByTagName("temperature1")->item(0)->nodeValue;
$tmp2 = $doc->getElementsByTagName("temperature2")->item(0)->nodeValue;
$date = $doc->getElementsByTagName("savedate_weather")->item(0)->nodeValue;
$pollution_l = $doc->getElementsByTagName("pollution_l")->item(0)->nodeValue;
$gm_s = $doc->getElementsByTagName("gm_s")->item(0)->nodeValue;

方法二:$_SERVER['HTTP_X_FORWARDED_FOR']来获取相应的地址
复制代码 代码如下:
function get_onlineip() {
$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;
}

echo '

' .$city .' / '.$date.'<>'. $tmp1 .'~'. $tmp2 .''.$stat1 .'

空气质量:'.$pollution_l .'

穿衣建议:'. $chy_shuoming .'

<><><>

';
?>

CSS样式

[code]
.sina-weather-content{border:1px solid #D14836;font-size:12px;line-height:14px;position:relative}
.sina-weather-city{background:#D14836;color:#FFFFFF;font-size:14px;font-weight:600;left:-1px;padding:5px 15px;position:absolute;top:5px;z-index:2;display:inline}
.sina-weather-body{overflow:hidden;padding:45px 15px 15px}
.sina-weather-body p{margin-bottom:10px}
.sina-weather-tem{color:#000000;font-size:36px;font-weight:700;line-height:36px;padding-top:10px}
.sina-weather-text{color:#666666;display:block;margin-top:10px}
.stat-w{color:#555555;font-family:Microsoft Yahei;font-size:18px;font-style:italic;font-weight:600;line-height:10px}
.entry-meta{position:relative;font-size:12px;font-size:12px;margin-top:-15px;padding:10px 0;text-transform:uppercase}
.entry-meta a{color:#666}
[/code

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