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<?php |
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namespace Potato\Database; |
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use PDO; |
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use PDOException; |
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/** |
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* Class configures connection to the database |
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* |
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* Loads database details from .env, configures DSN details and returns a PDO connection |
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* |
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*/ |
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class DatabaseConnection |
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{ |
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/** |
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* Associative array of Database configuratioon settings |
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* |
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* @var array |
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*/ |
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protected static $dbConfig = []; |
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/** |
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* PDO connection |
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* |
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* @var object |
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*/ |
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protected static $connection; |
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/** |
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* Constructor |
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* |
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* Load .env package by https://github.com/vlucas/phpdotenv |
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* |
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* Populate $dbConfig class variable with database connection settings |
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*/ |
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public function __construct() |
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{ |
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$dotenv = new \Dotenv\Dotenv(__DIR__ . "/.."); |
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$dotenv->load(); |
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self::$dbConfig = [ |
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"driver" => getenv('DB_DRIVER'), |
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"username" => getenv('DB_USERNAME'), |
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"password" => getenv('DB_PASSWORD'), |
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"database" => getenv('DB_NAME'), |
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"host" => getenv('DB_HOST'), |
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"port" => getenv('DB_PORT') |
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]; |
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} |
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/** |
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* Fetch database connection details |
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* and return a PDO connection or throw error |
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* |
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* @return object PDO Object |
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*/ |
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public static function connect() |
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{ |
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new static; |
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self::configDsn(); |
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try { |
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if (self::$dbConfig["driver"] === "sqlite") { |
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self::$connection = new PDO( |
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self::$dbConfig["dsn"] |
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); |
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} else { |
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self::$connection = new PDO( |
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self::$dbConfig["dsn"], |
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self::$dbConfig["username"], |
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self::$dbConfig["password"] |
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); |
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} |
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self::$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
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} catch (PDOException $e) { |
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echo $e->getMessage(); |
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} |
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return self::$connection; |
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} |
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/** |
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* Terminate database connection |
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* |
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* @return null close PDO DATABASE connection |
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*/ |
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public static function close() |
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{ |
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self::$connection = null; |
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return null; |
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} |
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/** |
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* construct PDO dsn string |
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* |
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* @return void |
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*/ |
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public static function configDsn() |
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{ |
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switch (self::$dbConfig["driver"]) { |
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case "mysql": |
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$dsn = "mysql:host=" . self::$dbConfig['host']; |
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$dsn .= ";dbname=" . self::$dbConfig['database']; |
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break; |
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case "pgsql": |
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$dsn = "pgsql:host=" . self::$dbConfig['host']; |
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$dsn .= ";port=". self::$dbConfig['port'] .";dbname=" . self::$dbConfig['database']; |
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break; |
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case "sqlite": |
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$dsn = "sqlite:" . self::$dbConfig["database"]; |
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break; |
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default: |
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$dsn = "sqlite:" . self::$dbConfig["database"]; |
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break; |
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} |
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self::$dbConfig["dsn"] = $dsn; |
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} |
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} |
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andela-jkariuki /
checkpoint-two-potato-orm
