<?php
/**
 * @author: CeeFee
 * @description: 考试
 */

class ZlStudentExamRs extends Model
{
    function __construct(){
        parent::__construct();
    }
    public function getCountStudentRsByExamGroupId($exmGroupId,$examId=0){
        if(!$exmGroupId) return 0;
        $sql="select DISTINCT zl_student_id  from `zl_student_exam_rs` where zl_exam_group_id = '".$exmGroupId."'";

        if($examId){
            $sql.=" and zl_exam_id='".$examId."'";
        }
        $data=$this->sConn->createCommand($sql)->queryAll();
        if($data){
            return count($data);
        }

        return 0;
    }
}