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PHP implements the code to prohibit IP segments from accessing the website_PHP tutorial

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Release： 2016-07-13 17:10:37
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There is a prerequisite that our page must be a PHP type page. If you generate an HTML static page, this method is not feasible. Let’s take a look at the PHP code that prohibits IP segments from accessing the website.

 代码如下 复制代码

//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'];
}
$ban_range_low=ip2long("217.0.0.0"); //ip段上
$ban_range_up=ip2long("217.255.255.255");//ip段尾
$ip=ip2long($userip]);
if ($ip>$ban_range_low && $ip<$ban_range_up)
{
print "Banned";
exit();
}
?>

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629663.htmlTechArticleThere is a prerequisite that our page must be a php type page. If you generate an html static page like this The method is not feasible. Let’s take a look at how PHP prohibits IP segments from accessing the network...
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