PhpBrew\Command\ExtensionCommand\InstallCommand::prepare PHP Method

    public function prepare()
    {
        parent::prepare();
        $buildDir = Config::getCurrentBuildDir();
        $extDir = $buildDir . DIRECTORY_SEPARATOR . 'ext';
        if (!is_dir($extDir)) {
            $this->logger->error("Error: The ext directory '{$extDir}' does not exist.");
            $this->logger->error("It looks like you don't have the PHP source in {$buildDir} or you didn't extract the tarball.");
            $this->logger->error('Suggestion: Please install at least one PHP with your prefered version and switch to it.');
            return false;
        }
        return true;
    }