Php yii-create命令中的foreach

您能否在Yii:$app->db->createcommand中包含循环，这在yii2中类似于以下示例：

 $data = Yii::$app->db->createCommand('select 
 regional,".

foreach($tests as $test){
 COUNT(if(sah.kode_mk = "'.$test->kmk.'",1 , null)) AS "'.$test->kmk.'"
}

." from table_test 
 group by regional')->queryAll();

---

将foreach设置为CreateCommand之外，并将结果连接到字符串中：

$str = '';
foreach($tests as $test){
   $str .= ', COUNT(if(sah.kode_mk = "'.$test->kmk.'",1 , null)) AS "'.$test->kmk.'"';
}

$data = Yii::$app->db->createCommand('select regional".$str." from table_test group by regional')->queryAll();