Class not found error

[KeithStephens803]

I am getting Class 'index' not found in Eval function:

 

//write config

 

$path = dirname(__FILE__).DS.'..'.DS.'paymentclass';

 

if ( $model->payment_class ) {

 

    if (include_once($path.DS.$model->payment_class )) {

    eval( "\$_PAYMENT = new ".str_replace('.php', '', $model->payment_class)."();");

    }

}else {

    include( $path."pcl_payment.php" );

    $_PAYMENT = new pcl_payment();

}

$_PAYMENT->write_configuration();

 

//end write

 

 

Why????????