YII数据库查询

$userModel = User::Model(); $userModel-count(); $userModel-count($condition); $userModel-count($condition, $params); $userModel-countByAttributes($attributes); $userModel-countByAttributes($attributes, $condition); $userModel-countByAttrib

 $userModel = User::Model();

 $userModel->count();
 $userModel->count($condition);
 $userModel->count($condition, $params);
 $userModel->countByAttributes($attributes);
 $userModel->countByAttributes($attributes, $condition);
 $userModel->countByAttributes($attributes, $condition, $params);
 $userModel->countBySql($sql);
 $userModel->countBySql($sql, $params);
 
 // $userModel = User::Model();
 $userModel->find();
 $userModel->find($condition);
 $userModel->find($condition, $params);
 
 $userModel->findByPk($pk);
 $userModel->findByPk($pk, $condition);
 $userModel->findByPk($pk, $condition, $params);
 $userModel->findByAttributes($attributes);
 $userModel->findByAttributes($attributes, $userModel);
 $userModel->findByAttributes($attributes, $userModel, $params);
 
 $userModel->findBySql($sql);
 $userModel->findBySql($sql, $params);

 //返回值为对象数组，若为空则返回ＮＵＬＬ，为一条记录
 $findResult = $userModel->find('islock = :islock and phone_status=:phone_status',array(':islock' => 1,':phone_status'=>1));
 echo $findResult -> phone_status."
";
 var_dump($findResult->attributes);
 if($userModel->find('user_id=260')){
 echo 'find';
 }else{
 echo 'no find';
 }

参数解释：上面均返回一条记录 如果要返回多条数据findALL类似的

$condition 是一般sql里面where子句，一个字符窜

$params 是一个数组，为占位符赋值

查询出来所有数据：

 $userinfo= $userModel->findAllByAttributes(array('islock'=>1,'phone_status' => 0));
 foreach($userinfo as $k => $v){
 echo $v->user_id." ". $userinfo[$k][user_id]."
";
 }

可见，结果是一个二维数组。

讲CDbcriteria和Model对象进行结合

 $criteria = new CDbCriteria; 
 if($condition) $criteria->condition = $condition;
 $criteria->offset = $offset;
 if($order) $criteria->order = $order;
 if($limit!="ALL") $criteria->limit = $limit;
 if(!empty($more_criteria)){
 $criteria->mergeWith($more_criteria);
 }
 $Model = new $modelName;

 if(!empty($with_array)){
 $result = $Model->with($with_array)->findAllByAttributes($attributes,$criteria);
 }else{
 $result = $Model->findAllByAttributes($attributes,$criteria);
 }