Yii findAll() not working

Question

I am new in yii framework. I'm trying to get all records by conditition from a table using model but every time I failed. I solved it by simple mysqli1 query. But i want to get it yii findAll(); . Below my i tried

$criteria = new CDbCriteria;
$criteria->select('*');
$criteria->condition('u_id = $id');
$info = Info::model()->findAll($criteria);

Thank all!

Answer 1

select('*') should be select = "*" and condition('u_id = $id') should be "u_id = $id" . Try like below

$criteria = new CDbCriteria;
$criteria->select = '*';
$criteria->condition = "u_id = $id";
$info = Info::model()->findAll($criteria);

Answer 2

This is my way to do it:

$id =10;
$info = Info::model()->findAll(array("u_id"=> $id ));