A simple means of generating a local mirror of another website as you use it.

.htaccess

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^(.*)$ index.php?url=$1 [QSA,L]
</IfModule>

index.php

<?php
$domain = 'http://php.net';
$uri = $_SERVER['REQUEST_URI'];
if ($pos = $strpos($uri, '?')) {
    $uri = substr($uri, 0, $pos);
}
$dir = dirname($uri);
exec('mkdir -p .' . $dir);
exec("cd .$dir && wget {$domain}$uri");
echo file_get_contents('.' . $uri);