PhpBrew\BuildSettings\BuildSettings::loadVariantInfoFile PHP Method

    public function loadVariantInfoFile($variantFile)
    {
        if (!is_readable($variantFile)) {
            throw new Exception("Can't load variant info! Variants file {$variantFile} is not readable.");
        }
        $variantInfo = unserialize(file_get_contents($variantFile));
        return $this->loadVariantInfo($variantInfo);
    }