我有一个YII 1应用程序。我试图连接到Azure数据库。
如果禁用该选项，则可以连接Azure数据库：强制SSL连接
但我当然想启用这个选项。
但如果启用此选项，则会出现以下错误：

CDbConnection failed to open the DB connection: SQLSTATE[HY000] [9002] SSL connection is required. Please specify SSL options and retry.

CWebUser.php(146)

134 
135     /**
136      * PHP magic method.
137      * This method is overridden so that persistent states can be accessed like properties.
138      * @param string $name property name
139      * @return mixed property value
140      */
141     public function __get($name)
142     {
143         if($this->hasState($name))
144             return $this->getState($name);
145         else
146             return parent::__get($name);
147     }
148 
149     /**
150      * PHP magic method.
151      * This method is overridden so that persistent states can be set like properties.
152      * @param string $name property name
153      * @param mixed $value property value
154      * @throws CException
155      */
156     public function __set($name,$value)
157     {
158         if($this->hasState($name))

我在中的main.php看起来像这样：

'db'=> [
            'pdoClass' => 'NestedPDO',
            'connectionString' => 'mysql:host=host_name;dbname=db_name',
            'emulatePrepare' => true,
            'username' => 'user',
            'password' => 'password',            
            'charset' => 'utf8',
            'enableProfiling'=>true,
        ],
        'cache'=>[
            'class'=>'system.caching.CDbCache',
        ],

所以我的问题是：这部分配置中缺少什么？
谢谢你
如果我这样尝试：

'db'=> [
            'pdoClass' => 'NestedPDO',
            'connectionString' => 'mysql:host=host_name;dbname=db_name',
            'emulatePrepare' => true,
            'username' => 'user',
            'password' => 'password',            
            'charset' => 'utf8',
            'enableProfiling'=>true,      
         'attributes' =>[                       
                PDO::MYSQL_ATTR_SSL_CA => 'path ssl'
            ]

我得到这个错误：

CDbConnection failed to open the DB connection: SQLSTATE[HY000] [2002] (trying to connect via (null))

在mysql workbrench中，如果我测试ssl证书，我会得到一个成功的响应。