Mail function not working in YII framework PHP

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PHP

Dear Members,

I m using YII framework for the development of new application, I m new to this !.. I got struck in mail function.

Can anyone help me in this regard... following this I post my code for reference

Thanks in advance!...

'mail' => array(
    'class' => 'ext.yii-mail.YiiMail',
    'transportType' => 'smtp',
    'transportOptions' => array(
        'host' => 'smtp.gmail.com',
        'username' => 'XXXX@gmail.com',
        'password' => 'XXXX',
        'port' => '465',
        'encryption'=>'tls',
    ),
    'viewPath' => 'application.views.mail',
    'logging' => true,
    'dryRun' => false
),