Currently CyberPanel doesn't have API functions fully described and implemented.
So I wrote this library.

// If you need public key auth on ssh connection provide private key string to $key parameter otherwise it should be null.
// $enableSecureFTP parameter should be true for using setCustomSSL method. 
// If you don't need this don't set it true.
$ip         = "127.0.0.1";
$user       = "root"; // use only root user
$password   = "TopSecretPassword"; // root password
$port       = 22; // ssh port
$timeout    = 20; // connection timeout
$enableSecureFTP = false; // set it true if you use $cyberlink->setCustomSSL() method.
$cyberlink  = new \BurakBoz\CyberLink($ip, $user, $password, $key = null, $port = 22, $timeout = 10, $enableSecureFTP = false);
$phpVersion = "7.3";
$owner      = "admin";
$package    = "Default";
try
{
    if($cyberlink->createWebsite("merhaba.com", "[email protected]", $package, $owner, $phpVersion))
    {
        echo "Host created.";
    }
    else
    {
        echo "Error: " . $cyberlink->getLastMessage();
    }
}
catch (Exception $e)
{
    echo "Error: " . $e->getMessage();
}

/**
 * @param        $domainName
 * @param        $email
 * @param string $package
 * @param string $owner
 * @param string $phpVersion
 * @return bool
 * @throws Exception
 */
$cyberlink->createWebsite($domainName, $email, $package = self::package, $owner = self::owner, $phpVersion = self::phpVersion);

/**
 * @param $domainName
 * @return bool
 * @throws Exception
 */
$cyberlink->deleteWebsite($domainName);

/**
 * @param        $masterDomain
 * @param        $childDomain
 * @param string $owner
 * @param string $phpVersion
 * @return bool
 * @throws Exception
 */
$cyberlink->createChild($masterDomain, $childDomain, $owner = self::owner, $phpVersion = self::phpVersion);

/**
 * @param $childDomain
 * @return bool
 * @throws Exception
 */
$cyberlink->deleteChild($childDomain);

/**
 * @return mixed
 */
$cyberlink->listWebsites();

/**
 * @param        $domainName
 * @param string $phpVersion
 * @return bool
 * @throws Exception
 */
$cyberlink->changePHP($domainName, $phpVersion = self::phpVersion);

/**
 * @param        $domainName
 * @param string $packageName
 * @return bool
 * @throws Exception
 */
$cyberlink->changePackage($domainName, $packageName = self::package);

/**
 * @param $domainName
 * @return bool
 * @throws Exception
 */
$cyberlink->createBackup($domainName);

/**
 * @param $domainName
 * @param $fileName
 * @return bool
 * @throws Exception
 */
$cyberlink->restoreBackup($domainName, $fileName);

/**
 * @param        $packageName
 * @param int    $diskSpace
 * @param int    $bandwidth
 * @param int    $emailAccounts
 * @param int    $dataBases
 * @param int    $ftpAccounts
 * @param int    $allowedDomains
 * @param string $owner
 * @return bool
 * @throws Exception
 */
$cyberlink->createPackage($packageName, $diskSpace = 1000, $bandwidth = 10000, $emailAccounts = 100, $dataBases = 100, $ftpAccounts = 100, $allowedDomains = 100, $owner = self::owner);

/**
 * @param $packageName
 * @return bool
 * @throws Exception
 */
$cyberlink->deletePackage($packageName);

/**
 * @return mixed
 */
$cyberlink->listPackages();

/**
 * @param $databaseWebsite
 * @param $dbName
 * @param $dbUsername
 * @param $dbPassword
 * @return bool
 * @throws Exception
 */
$cyberlink->createDatabase($databaseWebsite, $dbName, $dbUsername, $dbPassword);

/**
 * @param $dbName
 * @return bool
 * @throws Exception
 */
$cyberlink->deleteDatabase($dbName);

/**
 * @param $databaseWebsite
 * @return mixed
 */
$cyberlink->listDatabases($databaseWebsite);

/**
 * @param        $domainName
 * @param        $userName
 * @param        $password
 * @param string $owner
 * @return bool
 * @throws Exception
 */
$cyberlink->createFTPAccount($domainName, $userName, $password, $owner = self::owner);

/**
 * @param $userName
 * @return bool
 * @throws Exception
 */
$cyberlink->deleteFTPAccount($userName);

/**
 * @param $userName
 * @param $password
 * @return bool
 * @throws Exception
 */
$cyberlink->changeFTPPassword($userName, $password);

/**
 * @param $domainName
 * @return mixed
 */
$cyberlink->listFTP($domainName);

/**
 * @param $domainName
 * @return bool
 * @throws Exception
 */
$cyberlink->issueSSL($domainName);

/**
 * @param $domainName
 * @return bool
 * @throws Exception
 */
$cyberlink->hostNameSSL($domainName);

/**
 * @param $domainName
 * @return bool
 * @throws Exception
 */
$cyberlink->mailServerSSL($domainName);

/**
 * Warning! This method shouldn't be trusted. In future versions of CyberPanel (Currently 1.9) and LiteSpeed may cause system failure. Use at your own risk.
 * @param $domain
 * @param $publicKey
 * @param $privateKey
 * @return bool
 * @throws Exception
 */
$cyberlink->setCustomSSL($domain, $publicKey, $privateKey);

/**
 * @param $password
 * @return string
 */
$cyberlink->resetAdminPassword($password);

/**
 * @return string
 */
$cyberlink->upgradeCyberPanel();

/**
 * @return string
 */
$cyberlink->restartLiteSpeed();

/**
 * @return string
 */
$cyberlink->rebootServer();

/**
 * @return string
 */
$cyberlink->uptime();