message: PDO of PHP7.0 not support MySQL8.
diff: @@ -23,6 +23,7 @@ go(function () {
  $stmt = $db->prepare('SELECT * FROM numbers');
  $r_strong2 = $stmt->execute();
  + try {
  $pdo = new PDO(
  "mysql:host=" . MYSQL_SERVER_HOST . ";dbname=" . MYSQL_SERVER_DB . ";charset=utf8",
  MYSQL_SERVER_USER, MYSQL_SERVER_PWD
  @@ -32,10 +33,13 @@ go(function () {
  $stmt = $pdo->prepare('SELECT * FROM numbers');
  $stmt->execute();
  $r_strong3 = $stmt->fetchAll(PDO::FETCH_ASSOC);
  -
  assert($r_string1 === $r_string2);
  - assert($r_strong1 === $r_strong2);
  assert($r_strong2 === $r_strong3);
  + } catch (\PDOException $e) {
  + assert($e->getCode() === 2054); // not support auth plugin
  + }
  +
  + assert($r_strong1 === $r_strong2);
  var_dump($r_strong2);
  });
  ?>
  