prepare(...) etc public function pdo_connect() : PDO { try { $pdo = new PDO(self::get_dsn(), Config::get(Config::DB_USER), Config::get(Config::DB_PASS)); } catch (Exception $e) { print "

Exception while creating PDO object:" . $e->getMessage() . "

"; exit(101); } $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); if (Config::get(Config::DB_TYPE) == "pgsql") { $pdo->query("set client_encoding = 'UTF-8'"); $pdo->query("set datestyle = 'ISO, european'"); $pdo->query("set TIME ZONE 0"); $pdo->query("set cpu_tuple_cost = 0.5"); } else if (Config::get(Config::DB_TYPE) == "mysql") { $pdo->query("SET time_zone = '+0:0'"); if (Config::get(Config::MYSQL_CHARSET)) { $pdo->query("SET NAMES " . Config::get(Config::MYSQL_CHARSET)); } } return $pdo; } public static function instance() : Db { if (self::$instance == null) self::$instance = new self(); return self::$instance; } public static function pdo() : PDO { if (self::$instance == null) self::$instance = new self(); if (empty(self::$instance->pdo)) { self::$instance->pdo = self::$instance->pdo_connect(); } return self::$instance->pdo; } public static function sql_random_function() { if (Config::get(Config::DB_TYPE) == "mysql") { return "RAND()"; } else { return "RANDOM()"; } } }