Composer\Installers\CakePHPInstaller::matchesCakeVersion PHP Метод

    protected function matchesCakeVersion($matcher, $version)
    {
        if (class_exists('Composer\\Semver\\Constraint\\MultiConstraint')) {
            $multiClass = 'Composer\\Semver\\Constraint\\MultiConstraint';
            $constraintClass = 'Composer\\Semver\\Constraint\\Constraint';
        } else {
            $multiClass = 'Composer\\Package\\LinkConstraint\\MultiConstraint';
            $constraintClass = 'Composer\\Package\\LinkConstraint\\VersionConstraint';
        }
        $repositoryManager = $this->composer->getRepositoryManager();
        if ($repositoryManager) {
            $repos = $repositoryManager->getLocalRepository();
            if (!$repos) {
                return false;
            }
            $cake3 = new $multiClass(array(new $constraintClass($matcher, $version), new $constraintClass('!=', '9999999-dev')));
            $pool = new Pool('dev');
            $pool->addRepository($repos);
            $packages = $pool->whatProvides('cakephp/cakephp');
            foreach ($packages as $package) {
                $installed = new $constraintClass('=', $package->getVersion());
                if ($cake3->matches($installed)) {
                    return true;
                }
            }
        }
        return false;
    }