'127.0.0.1', 'user' => 'root', 'password' => 'root', 'database' => 'test' ]; $clear = <<connect($server); if ($db->query($clear) && $db->query($procedure)) { $stmt = $db->prepare('CALL say(?)'); $ret = $stmt->execute(['hello mysql!']); var_dump(current($ret[0])); // you said: "hello mysql!" } });