我在 Windows Server 2008 上运行 php 5.5。我在应用程序中使用 Laravel 4.0 框架。我通过 PDO 连接到 SQL SRV 数据库，当通过 http 执行时没有问题，建立连接数据被调用和更新没有问题。
但是，当从 Artisan（Laravel 的 CLI 工具）调用命令时，我在日志中收到以下错误：
log.ERROR: exception 'PDOException' with message 'could not find driver' in C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\Connectors\Connector.php:47
Stack trace:
#0 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\Connectors\Connector.php(47): PDO->__construct('sqlsrv:Server=H...', 'xxxxxx', 'xxxxxx', Array)
#1 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\Connectors\SqlServerConnector.php(29): Illuminate\Database\Connectors\Connector->createConnection('sqlsrv:Server=H...', Array, Array)
#2 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php(41): Illuminate\Database\Connectors\SqlServerConnector->connect(Array)
#3 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\DatabaseManager.php(128): Illuminate\Database\Connectors\ConnectionFactory->make(Array, 'sqlsrv')
#4 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\DatabaseManager.php(64): Illuminate\Database\DatabaseManager->makeConnection('sqlsrv')
#5 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Database\DatabaseManager.php(242): Illuminate\Database\DatabaseManager->connection()
#6 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade.php(206): Illuminate\Database\DatabaseManager->__call('table', Array)
#7 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade.php(206): Illuminate\Database\DatabaseManager->table('bb_job_details')
#8 C:\inetpub\MBSWeb\postsrch\app\models\Job.php(214): Illuminate\Support\Facades\Facade::__callStatic('table', Array)
#9 C:\inetpub\MBSWeb\postsrch\app\models\Job.php(214): Illuminate\Support\Facades\DB::table('bb_job_details')
#10 C:\inetpub\MBSWeb\postsrch\app\models\Cron.php(18): Job::getJobDetailsByStatus()
#11 C:\inetpub\MBSWeb\postsrch\app\controllers\ApplicantController.php(14): Cron::ChangePostingJobStatus()
#12 C:\inetpub\MBSWeb\postsrch\app\commands\GetApplicantsCommand.php(45): ApplicantController->index()
#13 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Console\Command.php(108): GetApplicantsCommand->fire()
#14 C:\inetpub\MBSWeb\postsrch\vendor\symfony\console\Symfony\Component\Console\Command\Command.php(244): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#15 C:\inetpub\MBSWeb\postsrch\vendor\laravel\framework\src\Illuminate\Console\Command.php(96): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#16 C:\inetpub\MBSWeb\postsrch\vendor\symfony\console\Symfony\Component\Console\Application.php(897): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#17 C:\inetpub\MBSWeb\postsrch\vendor\symfony\console\Symfony\Component\Console\Application.php(191): Symfony\Component\Console\Application->doRunCommand(Object(GetApplicantsCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#18 C:\inetpub\MBSWeb\postsrch\vendor\symfony\console\Symfony\Component\Console\Application.php(121): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#19 C:\inetpub\MBSWeb\postsrch\artisan(59): Symfony\Component\Console\Application->run()
#20 {main} [] []
[2014-03-23 22:53:13] log.ERROR: exception 'Symfony\Component\Debug\Exception\FatalErrorException' with message 'Call to undefined function Symfony\Component\Console\mb_detect_encoding()' in C:\inetpub\MBSWeb\postsrch\vendor\symfony\console\Symfony\Component\Console\Application.php:721
Stack trace:
#0 [internal function]: Illuminate\Exception\Handler->handleShutdown()
#1 {main} [] []
PDO SQLSRV 库已安装，请参见下面的屏幕截图phpinfo()，正如我已经说过的，通过 http 使用应用程序时我可以毫无问题地进行连接；
为什么 PDO 连接通过 http 工作正常，但在 CLI 中却不行？请注意我使用完全相同的一组代码，一个从 Laravel 控制器调用，另一个从 Laravel 命令调用。
php cli 和 php cgi 使用不同的 php.ini 文件。尝试php -i | grep pdo要查看您的 cli 是否安装了 pdo，请参阅php -i | grep "Loaded Configuration File"