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

    public function execute($extName, $version = 'stable')
    {
        if (version_compare(PHP_VERSION, '7.0.0') > 0) {
            $this->logger->warn("Warning: Some extension won't be able to be built with php7. If the extension\nsupports php7 in another branch or new major version, you will need to specify\nthe branch name or version name explicitly.\n\nFor example, to install memcached extension for php7, use:\n\n    phpbrew ext install github:php-memcached-dev/php-memcached php7 -- --disable-memcached-sasl\n");
        }
        if (strtolower($extName) === 'apc' && version_compare(PHP_VERSION, '5.6.0') > 0) {
            $this->logger->warn('apc is not compatible with php 5.6+ versions, install apcu instead.');
        }
        // Detect protocol
        if ((preg_match('#^git://#', $extName) || preg_match('#\\.git$#', $extName)) && !preg_match('#github|bitbucket#', $extName)) {
            $pathinfo = pathinfo($extName);
            $repoUrl = $extName;
            $extName = $pathinfo['filename'];
            $extDir = Config::getBuildDir() . DIRECTORY_SEPARATOR . Config::getCurrentPhpName() . DIRECTORY_SEPARATOR . 'ext' . DIRECTORY_SEPARATOR . $extName;
            if (!file_exists($extDir)) {
                passthru("git clone {$repoUrl} {$extDir}", $ret);
                if ($ret != 0) {
                    return $this->logger->error('Clone failed.');
                }
            }
        }
        // Expand extensionset from config
        $extensions = array();
        if (Utils::startsWith($extName, '+')) {
            $config = Config::getConfigParam('extensions');
            $extName = ltrim($extName, '+');
            if (isset($config[$extName])) {
                foreach ($config[$extName] as $extensionName => $extOptions) {
                    $args = explode(' ', $extOptions);
                    $extensions[$extensionName] = $this->getExtConfig($args);
                }
            } else {
                $this->logger->info('Extension set name not found. Have you configured it at the config.yaml file?');
            }
        } else {
            $args = array_slice(func_get_args(), 1);
            $extensions[$extName] = $this->getExtConfig($args);
        }
        $extensionList = new ExtensionList($this->logger, $this->options);
        $manager = new ExtensionManager($this->logger);
        foreach ($extensions as $extensionName => $extConfig) {
            $provider = $extensionList->exists($extensionName);
            if (!$provider) {
                throw new Exception("Could not find provider for {$extensionName}.");
            }
            $extensionName = $provider->getPackageName();
            $ext = ExtensionFactory::lookupRecursive($extensionName);
            $always_redownload = $this->options->{'pecl'} || $this->options->{'redownload'} || !$provider->isBundled($extensionName);
            // Extension not found, use pecl to download it.
            if (!$ext || $always_redownload) {
                // not every project has stable branch, using master as default version
                $args = array_slice(func_get_args(), 1);
                if (!isset($args[0]) || $args[0] != $extConfig->version) {
                    $extConfig->version = $provider->getDefaultVersion();
                }
                $extensionDownloader = new ExtensionDownloader($this->logger, $this->options);
                $extensionDownloader->download($provider, $extConfig->version);
                // Reload the extension
                if ($provider->shouldLookupRecursive()) {
                    $ext = ExtensionFactory::lookupRecursive($extensionName);
                } else {
                    $ext = ExtensionFactory::lookup($extensionName);
                }
                if ($ext) {
                    $extensionDownloader->renameSourceDirectory($ext);
                }
            }
            if (!$ext) {
                throw new Exception("{$extensionName} not found.");
            }
            $manager->installExtension($ext, $extConfig->options);
        }
    }