<"MySQL Error: " . $strErrMsg);
  }
  public function __destruct() {
    $this->dbh = null;
  }
}

<"select id, title1 from cms_wz where id = :id limit 1";
$parame = array('id' => 12,);
$res = $pdo->fetchOne($sql, $parame);
var_dump($res);
$sql = 'SELECT * FROM cms_link';
$result = $db->fetchAll($sql);
print_r($result);
//查询记录数量
$sql = 'SELECT COUNT(*) FROM cms_link';
$count = $db->fetchColumn($sql);
echo $count;
$data = array(
  'siteid' => 1,
  'linktype' => 1,
  'name' => 'google',
  'url' => 'http://www.google.com',
  'listorder' => 0,
  'elite' => 0,
  'passed' => 1,
  'addtime' => time()
  );
$lastInsertId = $db->insert('cms_link', $data);
echo $lastInsertId;
//用 try
 try {
     $result = $pdo->insert('news', $essay);
   } catch (Exception $e) {
     error_log($e->getMessage());
     error_log($e->getMessage() . ' in ' . __FILE__ . ' on line ' . __LINE__);
     saveLog('url文章 : ' . $essay['link'] . '  数据插入失败<br>');
     continue;
   }
$data = array(
  'siteid' => 1,
  'linktype' => 1,
  'name' => 'google',
  'url' => 'http://www.google.com',
  'listorder' => 0,
  'elite' => 0,
  'passed' => 1,
  'addtime' => time()
  );
$db->insert('cms_link', $data);
$sql = 'DELETE FROM cms_link WHERE linkid=4';
$result = $db->delete($sql);
var_dump($result);