自用帝国CMS高效随机调用

function ZQrand($classid , $num = 60){
    global $dbtbpre,$empire;
    /* 检测json文件是否存在 */
    $file_arrs = glob(ECMS_PATH."d/json/*.json");
    $file_cache = $file_arrs[0];
    //缓存整个news表的数据
    if(!file_exists($file_cache)){
        //创建文件夹
        @mkdir(ECMS_PATH."d/json/",0777);
        //查询分类
        $hm_class=$empire->query("select classid from {$dbtbpre}enewsclass"); 
        while($hm_r=$empire->fetch($hm_class))
        {
            //查询分类下面的所有id
            $hm_news=$empire->query("SELECT id FROM `{$dbtbpre}ecms_news` WHERE `classid` = {$hm_r[classid]}"); 
            while($hm_nr=$empire->fetch($hm_news))
            {
                $news_data[] = $hm_nr[id];
            }
            file_put_contents(ECMS_PATH . "d/json/" . $hm_r['classid'] . ".json",json_encode($news_data));
            unset($news_data);
        }
        //查询所有
        $more = 0;
        $hm_news2=$empire->query("SELECT id FROM `{$dbtbpre}ecms_news`"); 
        while($hm_nr2=$empire->fetch($hm_news2))
        {
            $all_id[] = $hm_nr2[id];
            if($more>=1000){
                file_put_contents(ECMS_PATH . "d/json/allId{$hm_nr2[id]}.json",json_encode($all_id));
                unset($all_id);
                $more = 0;
            }
            $more++;
        }
        
    }
    $num = (int) empty($num)?10:$num;
    $classid = (int)$classid;
   // 获取所有的文件
    $hm_class=$empire->fetch1("select classid from {$dbtbpre}enewsclass where classid = {$classid} and bclassid != 0"); 
    if(empty($hm_class[classid])){
        // 随机调用
        $file_arrs = glob(ECMS_PATH."d/json/allId*.json");
        $counts = count(glob(ECMS_PATH."d/json/allId*.json")) - 1;
        // print_r($file_arrs);
        // echo $counts;
        $file_arrs = $file_arrs[mt_rand(0,$counts)];
        // echo $file_arrs;
        $file_arrs = json_decode(file_get_contents($file_arrs),true);
    }else{
        //调用栏目
        $file_arrs = json_decode(file_get_contents(ECMS_PATH."d/json/{$classid}.json"),true);
    }
    if(empty($file_arrs)){
        return '';
    }else{
        for ($rani=1; $rani<=$num; $rani++){
            $rand_id.= $file_arrs[mt_rand(0,count($file_arrs)-1)].",";   
            // echo mt_rand(1,500);
        }
        $rand_id = rtrim($rand_id,",");
        $where = "id in ($rand_id)";
        return $where;
    }
}

前端调用代码

<?php
$ranid  = ZQrand($navinfor[classid],10);
?>
[e:loop={0,10,3,0,"$ranid"}]  
<?=$bqr[title]?>
 [/e:loop]

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