你用什么语言？你能告诉我们更多的细节吗？你在做什么来连接？
我有一个通过jdbc到mysql的字符串url连接的例子

var address = "jdbc:sqlserver://sql5050.site4now.net;databaseName=DB_Example"
 var user = "DB_A5D54B_admin"
 var rootPwd  = "Password*"
 var conn = Jdbc.getConnection(address, user, rootPwd);

这是与谷歌脚本和作品不错
首先，请参阅此文档以安装pdo：http://php.net/manual/en/pdo.installation.php
php的例子是：

<?php
$servername = "localhost";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>