PHP Decode

<?php 
if (!extension_loaded('curl')){ 
	die("Sistemin almas iin sunucunuzda cURL ykl olmaldr."); 
} 
function get_custom_date($timezone = "UTC", $format = "d.m.Y, H:i:s") { 
 $dt = new DateTime("now", new DateTimeZone($timezone)); 
 $dt->setTimestamp(time()); 
 return $dt->format($format); 
 unset($timezone, $format, $dt); 
} 
$sistem_timezone = "Europe/Istanbul"; 
function curlCall($strURL) 
{ 
	$ch = curl_init(); 
	curl_setopt($ch, CURLOPT_HEADER, 0); 
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
	curl_setopt($ch, CURLOPT_URL, $strURL); 
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); 
	$rsData = curl_exec($ch); 
	curl_close($ch); 
	return $rsData; 
} 
$domain            = ltrim($_SERVER["HTTP_HOST"],"www."); 
$json              = json_decode(curlCall('https://aktifsunucum.com.tr/yonetim/api/checker.php?domain=' . $domain . '&ip=' . $_SERVER["REMOTE_ADDR"] . '')); 
 
if (!file_exists(__DIR__ . "/lisans.lis")) 
    touch(__DIR__ . "/lisans.lis"); 
$scriptFolder = (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on')) ? 'https://' : 'http://'; 
$scriptFolder .= $_SERVER['HTTP_HOST'] . dirname($_SERVER['SCRIPT_NAME']);  
$gecerli_yerel_hash     = curlCall($scriptFolder . "/lisans.lis"); 
$hash_guvenlik_anahtari = "757831928281420180d09c491a8bc79b"; 
$yerel_hash             = wordwrap(strtoupper(sha1(get_custom_date($sistem_timezone, "Ymd") . $hash_guvenlik_anahtari)), 8, "-", true); 
unset($hash_guvenlik_anahtari); 
if ($gecerli_yerel_hash !== $yerel_hash) { 
     
    //KONTROL 
    if ($json->lisans == "error") { 
        if ($json->trial == "false") { 
            die(curlCall('https://aktifsunucum.com.tr/yonetim/api/hata/lisanssiz-kullanim.html')); 
        } 
    } else { 
        if ($json->ban) { 
            die(curlCall('https://aktifsunucum.com.tr/yonetim/api/hata/yasakli.html')); 
        } else { 
            if ($json->bitis != "UL") { 
                    if ($json->bitis == "BAD") { 
                    die(curlCall('https://aktifsunucum.com.tr/yonetim/api/hata/sure-doldu.html')); 
                    } 
                } 
        } 
    } 
 
        } 
    unset($json); 
    $lisans_aktiflik_durumu = true; 
    if ($lisans_aktiflik_durumu === true) { 
        file_put_contents(__DIR__ . "/lisans.lis", $yerel_hash); 
    } 
unset($lisans_aktiflik_durumu); 
unset($yerel_hash); 
unset($hash_guvenlik_anahtari); 
unset($gecerli_yerel_hash); 
?>