PHP根据ip限制访问网页[转]

如果只是简单的独立IP判断，最简单的可以这样

<?php

// 被允许的IP

$allowIP = array(

'192.168.1.11',

'192.168.1.22',

'192.168.1.33',

);

$ip=$_SERVER["REMOTE_ADDR"];

if(!in_array($ip,$allowIP))

{

    echo "access forbid!";

    exit;

}

?>

IP段的也很简单:

<?php

// 被允许的IP段

$allowIP = array(

'192.168.1',

'192.168.2',

'192.168.3',

);

$ip = explode('.',$_SERVER["REMOTE_ADDR"]);

array_pop($ip);

$ip = implode('.',$ip);

if(!in_array($ip,$allowIP))

{

    echo "access forbid!";

    exit;

}

?>

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