App\Console\Commands\XeInstall::stepRequirement PHP Method

    protected function stepRequirement()
    {
        if (!defined('PHP_VERSION_ID')) {
            $version = explode('.', PHP_VERSION);
            define('PHP_VERSION_ID', $version[0] * 10000 + $version[1] * 100 + $version[2]);
        }
        $versionCheck = constant('PHP_VERSION_ID') < 50509 ? false : true;
        if (!$versionCheck) {
            throw new \Exception('PHP version is not available');
        }
        $extensions = ['PDO', 'pdo_mysql', 'curl', 'gd', 'mbstring', 'openssl', 'zip'];
        $result = [];
        foreach ($extensions as $ext) {
            $result[$ext] = extension_loaded($ext);
            $this->output->write("- check {$ext} extension: ");
            if ($result[$ext]) {
                $this->info('true');
            } else {
                $this->error('false');
            }
        }
        $this->output->newLine();
        if (array_search(false, $result) > -1) {
            throw new \Exception('PHP extension is not ready! Please check php extensions. And retry install.');
        }
    }