Empire cms php calls random lines in text

function rand_txt($filename = "hot", $type = 1){
    if(!file_exists(ECMS_PATH."d/{$filename}.txt")){
        return "请检查网站根目录下/d/{$filename}.txt文件是否存在。";
        exit;
    }
    $file=@file_get_contents(ECMS_PATH."d/{$filename}.txt");
    $ci = explode("\n",$file);
    if(empty($ci)){
        return "请检查网站根目录下/d/{$filename}.txt文件是否存在内容。";        
    }
    if($type == 2){
        $filecache = ECMS_PATH."d/json/".md5('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']).".json";
        if(!file_exists($filecache)){ 
          @mkdir(ECMS_PATH."d/json",0777); 
          @chmod(ECMS_PATH."d/json",0777); 
          $row = mt_rand(0,count($ci)-1);
          file_put_contents($filecache,$row);
          return $ci[$row];
        }else{
           $row = file_get_contents($filecache);
           return $ci[$row];
        }
    }
    return $ci[mt_rand(0,count($ci)-1)];
}

Empire cms php calls random lines in text