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<?php final class DbConnection { private $dsn; private $initialized = false; public function __construct($dsn) { $this->dsn = $dsn; } private function init() { $this->initialized = true; // socket stuff happens here, much like with PDO } public function query($queryString) { $this->initialized || $this->init(); // irrelevant from here on return ['query' => $queryString, 'dsn' => $this->dsn]; } } $db_conn = new DbConnection('mysql://something'); var_dump( $db_conn, $db_conn->query('SELECT * FROM foo'), $db_conn->query('SELECT * FROM bar') );
Output for git.master, git.master_jit, rfc.property-hooks
object(DbConnection)#1 (2) { ["dsn":"DbConnection":private]=> string(17) "mysql://something" ["initialized":"DbConnection":private]=> bool(true) } array(2) { ["query"]=> string(17) "SELECT * FROM foo" ["dsn"]=> string(17) "mysql://something" } array(2) { ["query"]=> string(17) "SELECT * FROM bar" ["dsn"]=> string(17) "mysql://something" }

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