[李景山php]每天laravel-20161117|ConnectionFatory.php-1

namespace Illuminate\Database\Connectors;use PDO;use Illuminate\Support\Arr;use InvalidArgumentException;use Illuminate\Database\MySqlConnection;use Illuminate\Database\SQLiteConnection;use Illuminate\Database\PostgresConnection;use Illuminate\Database\SqlServerConnection;use Illuminate\Contracts\Container\Container;// namespace it is the namespaceclass ConnectionFactory{// make the Connection Factory    /**     * The IoC container instance.     *     * @var \Illuminate\Contracts\Container\Container     */    protected $container;//The IoC container instance.    // IoC container instance    /**     * Create a new connection factory instance.     *     * @param  \Illuminate\Contracts\Container\Container  $container     * @return void     */    public function __construct(Container $container)    {//Create a new connection factory instance.        $this->container = $container;// set the container    }// this->container container;    /**     * Establish a PDO connection based on the configuration.     *     * @param  array   $config     * @param  string  $name     * @return \Illuminate\Database\Connection     */    public function make(array $config, $name = null)    {//Establish a PDO connection based on the configuration.        $config = $this->parseConfig($config, $name);// set the config        if (isset($config['read'])) {            return $this->createReadWriteConnection($config);//createReadWriteConnection        }// if set the config        // if it is set read        return $this->createSingleConnection($config);// get the single    }// create Single Connection    /**     * Create a single database connection instance.     *     * @param  array  $config     * @return \Illuminate\Database\Connection     */    protected function createSingleConnection(array $config)    {//Create a single database connection instance.        $pdo = function () use ($config) {            return $this->createConnector($config)->connect($config);        };// set the pdo set the create Connector connect        // create Connector        return $this->createConnection($config['driver'], $pdo, $config['database'], $config['prefix'], $config);    }// create the Connection    /**     * Create a single database connection instance.     *     * @param  array  $config     * @return \Illuminate\Database\Connection     */    protected function createReadWriteConnection(array $config)    {//Create a single database connection instance.        $connection = $this->createSingleConnection($this->getWriteConfig($config));// connection set the create Single Connection        return $connection->setReadPdo($this->createReadPdo($config));    }// setReadPdo    /**     * Create a new PDO instance for reading.     *     * @param  array  $config     * @return \PDO     */    protected function createReadPdo(array $config)    {        $readConfig = $this->getReadConfig($config);//        return $this->createConnector($readConfig)->connect($readConfig);    }//Create a new PDO instance for reading.