我想扩展我的~$_SERVER['REMOTE_ADDR'~检查的IP范围。以下操作有效,并且只允许10.0.4.*子网访问该站点:
$chk = "10.0.4.";
if( substr($_SERVER['REMOTE_ADDR'],0,strlen($chk)) !== $chk)
$wgGroupPermissions['*']['read'] = false;
当我修改$chk
字符串以向我的整个本地网络打开网站时,我最终会向整个世界打开网站。
$chk = "10.0.";
if( substr($_SERVER['REMOTE_ADDR'],0,strlen($chk)) !== $chk)
$wgGroupPermissions['*']['read'] = false;
我只希望我的本地子网10.0..具有对该站点的读取访问权限。我该怎么做?
使用掩码是比拆分字符串更好的方法:
function testSubnet($ip, $subnet, $mask) {
$ip = ip2long($ip);
$subnet = ip2long($subnet);
$mask = ip2long($mask);
return ($ip & $mask) == ($subnet & $mask);
}
var_dump(testSubnet('10.0.0.1', '10.0.0.0', '255.255.255.0'));
var_dump(testSubnet('10.0.0.2', '10.0.0.0', '255.255.255.0'));
var_dump(testSubnet('10.0.1.1', '10.0.0.0', '255.255.255.0'));
var_dump(testSubnet('10.0.1.1', '10.0.0.0', '255.255.0.0'));
在这种情况下:
if(testSubnet($_SERVER['REMOTE_ADDR'], '10.0.4.0', '255.255.255.0')) {
// Anything, blablabla...
}
为什么不能只做:
$z = $_SERVER['REMOTE_ADDR'];
function check($ip, $octet = 2) {
$allow = explode(".", "10.0.0.1");
$ipa = explode(".", $ip);
for($i = 0; $i < $octet; $i++) {
$ch .= $ipa[$i];
$ah .= $allow[$i];
}
return $ch == $ah;
}
echo check($z);
其中$octet是要匹配的八位字节数量。。默认值为2。
您可以使用header()
函数吗?试试这个。
$allowed_ip = "10.0.4";
if (!strstr($_SERVER['REMOTE_ADDR'],$allowed_ip))
header("Location: login.php");
// include("login.php");
/* The user will be redirected to another page or you could
always include your login.php page and just continue from there. */