In jedem Fall eine Option:
http://www.thewindowsclub.com/monitor-changes-in-the-windows-7-registry
   Zitat:

To use fc.exe, first, export a .reg file, & name it as say rega.

After the change takes place export the changed .reg file & name it as say, regb.

Now, open a command prompt and type:

fc /u rega.reg regb.reg > regcompare.txt

Since .reg files use unicode, the /u switch, tells fc.exe to use Unicode.

You can now inspect the output regcompare in Notepad.

To use fc.exe, first, export a .reg file, & name it as say rega.

After the change takes place export the changed .reg file & name it as say, regb.

Now, open a command prompt and type:

fc /u rega.reg regb.reg > regcompare.txt

Since .reg files use unicode, the /u switch, tells fc.exe to use Unicode.

You can now inspect the output regcompare in Notepad.

<?php
function createTLD($cache_filename, $max_tl=2) {
	$cache_folder = str_replace(basename($cache_filename), '', $cache_filename);
	if (!file_exists($cache_folder) || !is_writable($cache_folder)) {
		throw new Exception($cache_folder . ' is not writable!');
	}
	// feel free to use "fsockopen()" or "curl_init()" if "fopen wrappers" are disabled or "memory_limit" is to low
	$tlds = @file('http://mxr.mozilla.org/mozilla-central/source/netwerk/dns/effective_tld_names.dat?raw=1');
	if ($tlds === false) {
		throw new Exception('effective_tld_names.dat is not readable!');
	}
	$i = 0;
	// remove unnecessary lines
	foreach ($tlds as $tld) {
		$tlds[ $i ] = trim($tld);
		//     empty          comments           top level domains                   this is overboard
		if (!$tlds[ $i ] || $tld[0] == '/' || strpos($tld, '.') === false || substr_count($tld, '.') >= $max_tl) {
			unset($tlds[ $i ]);
		}
		$i++;
	}
	$tlds = array_values($tlds);
	file_put_contents($cache_filename, "<?php\n" . '$tlds = ' . str_replace(array(' ', "\n"), '', var_export($tlds, true)) . ";\n?" . ">");
	// feel free to split the file into multiple and smaller files f.e. by first char of the domain-level-name to reduce memory usage
}
function getHost($dom='', $fast=false) {
	// general
	$dom = !$dom ? $_SERVER['SERVER_NAME'] : $dom;
	// for parse_url()                  ftp://           http://          https://
	$dom = !isset($dom[5]) || ($dom[3] != ':' && $dom[4] != ':' && $dom[5] != ':') ? 'http://' . $dom : $dom;
	// remove "/path/file.html", "/:80", etc.
	$dom = parse_url($dom, PHP_URL_HOST);
	// replace absolute domain name by relative (http://www.dns-sd.org/TrailingDotsInDomainNames.html)
	$dom = trim($dom, '.');
	// for fast check
	$dom = $fast ? str_replace(array('www.', 'ww.'), '', $dom) : $dom;
	// separate domain level
	$lvl = explode('.', $dom);// 0 => www, 1 => example, 2 => co, 3 => uk
	// fast check
	if ($fast) {
		if (!isset($lvl[2])) {
			return isset($lvl[1]) ? $dom : false;
		}
	}
	// set levels
	krsort($lvl);// 3 => uk, 2 => co, 1 => example, 0 => www
	$lvl = array_values($lvl);// 0 => uk, 1 => co, 2 => example, 3 => www
	$_1st = $lvl[0];
	$_2nd = isset($lvl[1]) ? $lvl[1] . '.' . $_1st : false;
	$_3rd = isset($lvl[2]) ? $lvl[2] . '.' . $_2nd : false;
	$_4th = isset($lvl[3]) ? $lvl[3] . '.' . $_3rd : false;
	// tld check
	require('cache/tlds/all.txt'); // includes "$tlds"-Array or feel free to use this instead of the cache version:
	//$tlds = array('co.uk', 'co.jp');
	$tlds = array_flip($tlds);// needed for isset()
	// fourth level is TLD
	if ($_4th && !isset($tlds[ '!' . $_4th ]) && (isset($tlds[ $_4th ]) || isset($tlds[ '*.' . $_3rd ]))) {
		$dom = isset($lvl[4]) ? $lvl[4] . '.' . $_4th : false;
	}
	// third level is TLD
	else if ($_3rd && !isset($tlds[ '!' . $_3rd ]) && (isset($tlds[ $_3rd ]) || isset($tlds[ '*.' . $_2nd ]))) {
		$dom = $_4th;
	}
	// second level is TLD
	else if (!isset($tlds[ '!' . $_2nd ]) && (isset($tlds[ $_2nd ]) || isset($tlds[ '*.' . $_1st ]))) {
		$dom = $_3rd;
	}
	// first level is TLD
	else {
		$dom = $_2nd;
	}
	return $dom ? $dom : false;
}
$urls = array(
	'http://www.example.com',// example.com
	'http://subdomain.example.com',// example.com
	'http://www.example.uk.com',// example.uk.com
	'http://www.example.co.uk',// example.co.uk
	'http://www.example.com.ac',// example.com.ac
	'http://example.com.ac',// example.com.ac
	'http://www.example.accident-prevention.aero',// example.accident-prevention.aero
	'http://www.example.sub.ar',// example.sub.ar
	'http://www.congresodelalengua3.ar',// congresodelalengua3.ar
	'http://congresodelalengua3.ar',// congresodelalengua3.ar
	'http://www.example.pvt.k12.ma.us',// k12.ma.us (wrong) / if $max_tl=4: example.pvt.k12.ma.us
	'http://www.example.lib.wy.us',// lib.wy.us (wrong) / if $max_tl=3: example.lib.wy.us
	'com',// false
	'.com',// false
	'http://big.uk.com',// big.uk.com
	'uk.com',// false / in fast mode: uk.com (wrong)
	'www.uk.com',// http://www.uk.com / in fast mode: uk.com (wrong)
	'.uk.com',// false / in fast mode: uk.com (wrong)
	'stackoverflow.com',// stackoverflow.com
);
if (!file_exists('cache/tlds/all.txt')) {// feel free to refresh by interval
	createTLD('cache/tlds/all.txt');
}
echo '<pre>';
foreach ($urls as $url) {
	echo $url . ':' . var_export(getHost($url), true) . "\n";
}
echo $_SERVER['SERVER_NAME'] . ':' . var_export(getHost(), true) . "\n";
echo '</pre>';
?>

<?php
// ab hier html kopf, menü, usw., eben alles was nicht in den cache soll, weil es sich z.b. ändert, wenn sich jemand einloggt
?>
<html>
<head>
</head>
<body>
<div id="header">
	Website
</div>
<?php
// ab hier der content, der in den cache soll

// cache filename wird gebildet aus "script.php?foo=1&bar=2&PHPSESSID=098f6bcd4621d373cade4e832627b4f6", wobei die PHPSESSID entfernt wird, um mehrfache caches zu verhindern
$cache_filename = 'cache/' . (preg_replace(array('#([\w\d]+=[a-f0-9]{32})#', '#[^a-z0-9-_]#', '#([_])+#'), array('', '_', '$1') , $_SERVER['REQUEST_URI'])) . '.txt';
// cache existiert und ist nicht zu alt, also cache nutzen
// 86400 Sekunden = 1 Tag
if (file_exists($cache_filename) && @filemtime($cache_filename) + 86400 > time()) {
	echo @file_get_contents($cache_folder . $cache_filename);
}
// cache fehlte oder war zu alt, also live auslesen und cache erstellen/überschreiben
else {
	ob_start();
?>
<div>
	Content
<?php
// mysql abfragen sind auch mit im cache (werden dann nicht mehr ausgeführt, sondern das "echo"-Ergebnis landet nur im Cache
?>
</div>
<?php
	$html = ob_get_contents();
	ob_end_clean();
	@file_put_contents($cache_filename, $html);
	echo $html;
}
// ab hier der fuß usw. gleiches spiel wie beim kopf.
// der fuß kann evtl. auch in den cache, weil sich da nichts ändert, aber ich empfehle es nicht, weil man evtl. selbst mal später was hinzufügen will
?>
<div id="footer">
	Copyright
</div>
</body>
</html>

#include <stdio.h>
#include <stdlib.h>

int main(void) {

FILE * file;
char line[10];

file = fopen("ex1.txt","r");

if (file){

  while (!feof(file)){

    fgets(line,10,file);
    printf("line: %s",line);

  } //(!feof(file))

}// if (file)

fclose(file);
return EXIT_SUCCESS;
}

10
20
30
40

// firewall
if (file_exists('firewall/' . $client_ip . '.txt')) {
	include('includes/recaptchalib.php');
	if (isset($_POST['submit'])) {
		$privatekey = 'Dein_Private_Key';
		$resp = recaptcha_check_answer ($privatekey,
                                                               $client_ip, 
                                                               $_POST['recaptcha_challenge_field'], 
                                                               $_POST['recaptcha_response_field']);
		if (!$resp->is_valid) {
			die('Wrong! (reCAPTCHA: ' . $resp->error . ')');
		}
		else {
			unlink('firewall/' . $client_ip . '.txt');
			header('HTTP/1.1 302 Found');
			header('Location: http://' . $_SERVER['SERVER_NAME']);
		}
	}
	else {
		$publickey = 'Dein_Public_Key';
		echo '<html><head><title>Firewall</title></head><body><div><form method="post" action="./">' .
					recaptcha_get_html($publickey) .
					'<input name="submit" type="submit"></form></div></body></html>';
	}
	exit;
}