PhpBrew\VariantBuilder::checkConflicts PHP Method

    public function checkConflicts(Build $build)
    {
        if ($build->isEnabledVariant('apxs2') && version_compare($build->getVersion(), '5.4.0') < 0) {
            if ($conflicts = $this->getConflict($build, 'apxs2')) {
                $msgs = array();
                $msgs[] = 'PHP Version lower than 5.4.0 can only build one SAPI at the same time.';
                $msgs[] = '+apxs2 is in conflict with ' . implode(',', $conflicts);
                foreach ($conflicts as $c) {
                    $msgs[] = "Disabling {$c}";
                    $build->disableVariant($c);
                }
                echo implode("\n", $msgs) . "\n";
            }
        }
        return true;
    }