CDbConnection could not find extension

I have just setup a new app on but cannot connect to database. If I try to connect directly using PDO, it does not error. This if my config:



    'connectionString' => 'mysql:host=localhost;dbname=xxx',

    'emulatePrepare' => false,

    'username' => 'yyy', 

    'password' => 'zzz',

    'charset' => 'utf8',


    'pdoClass' => 'PHPPDO',

    'enableProfiling' => true,

    'enableParamLogging' => true


These are my PDO Drivers: dblib, mysql, odbc, pgsql, sqlite. And this is my pdo_mysql version: mysqlnd 5.0.12-dev - 20150407 - $Id: f59eb767fe17a6679589b5c076d9fa88d3d4eac0 $

From what I see, the pdo_mysql is already installed, is there anything I miss ? Thank you.

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