Php Kohana不会读取数据库中的会话数据

几分钟前，我将应用程序的新版本部署到stage实例。尝试登录后，我出现以下错误：

Session_Exception [ 1 ]: Error reading session data. [Details: Database_Exception [ ]: ~ MODPATH/database/classes/Kohana/Database/MySQL.php [ 108 ] ]

Stackoverflow充满了这些错误，但没有可能的答案帮助我

我的数据库配置文件：

 <?php defined('SYSPATH') OR die('No direct access allowed.');

return array
(
'default' => array
(
    'type'       => 'MySQL',
    'connection' => array(
        /**
         * The following options are available for MySQL:
         *
         * string   hostname     server hostname, or socket
         * string   database     database name
         * string   username     database username
         * string   password     database password
         * boolean  persistent   use persistent connections?
         * array    variables    system variables as "key => value" pairs
         *
         * Ports and sockets may be appended to the hostname.
         */
        'hostname'   => '127.0.0.1',
        'database'   => 'MY_DATABASE',
        'username'   => 'MY_USER',
        'password'   => 'MY_PASS',
        'persistent' => FALSE,
    ),
    'table_prefix' => '',
    'charset'      => 'utf8',
    'caching'      => FALSE,
),
'alternate' => array(
    'type'       => 'PDO',
    'connection' => array(
        /**
         * The following options are available for PDO:
         *
         * string   dsn         Data Source Name
         * string   username    database username
         * string   password    database password
         * boolean  persistent  use persistent connections?
         */
        'dsn'        => 'mysql:host=localhost;dbname=kohana',
        'username'   => 'root',
        'password'   => 'r00tdb',
        'persistent' => FALSE,
    ),
    /**
     * The following extra options are available for PDO:
     *
     * string   identifier  set the escaping identifier
     */
    'table_prefix' => '',
    'charset'      => 'utf8',
    'caching'      => FALSE,
),
);

Session:：instance在SYSPATH/classes/Kohana/Session.php[54]»Kohana_Session_数据库->中执行以下代码

参数转储$config:

参数转储$id:

以下函数产生从未修改过的错误！：

    /**
     * Select the database
     *
     * @param   string  $database Database
     * @return  void
     */
    protected function _select_db($database)
    {
            if ( ! mysql_select_db($database, $this->_connection))
            {
                    // Unable to select database
                    throw new Database_Exception(':error',
                            array(':error' => mysql_error($this->_connection)),
                            mysql_errno($this->_connection));
            }

            Database_MySQL::$_current_databases[$this->_connection_id] = $database;
    }

该应用程序在我的本地系统上运行良好。所以我认为这可能是php.ini中的一个错误。这就是为什么我试图在index.php中通过ini_set设置以下内容

    ini_set('session.auto_start', 0);

---

一无所获

尝试在引导文件中设置默认会话适配器

---

发生这种情况的原因有很多。Kohana-un用它自己的泛型异常有效地隐藏了实际异常。我建议暂时在catch块中抛出原始异常，以查看实际情况

在我的例子中，它来自一个关于mysql的弃用警告以及对mysqli或pdo的需求。因为，我忘了将MAMP PHP模式返回到各个PHP版本

array(4) (
"group" => string(7) "default"
"table" => string(8) "sessions"
"gc" => integer 500
"columns" => array(3) (
    "session_id" => string(10) "session_id"
    "last_active" => string(11) "last_active"
    "contents" => string(8) "contents"
)
) 

NULL

    /**
     * Select the database
     *
     * @param   string  $database Database
     * @return  void
     */
    protected function _select_db($database)
    {
            if ( ! mysql_select_db($database, $this->_connection))
            {
                    // Unable to select database
                    throw new Database_Exception(':error',
                            array(':error' => mysql_error($this->_connection)),
                            mysql_errno($this->_connection));
            }

            Database_MySQL::$_current_databases[$this->_connection_id] = $database;
    }

    ini_set('session.auto_start', 0);

Session::$default = 'database';