file(）会影响大小约为2MB的文件的性能吗

我只有一个选项可以从这个文本文件中获取数据，所以我不能使用数据库来存储这些数据。函数抓取数据的文件每天00:00都会被重新创建，所以它不会变得很大。最大2MB的大小，一天结束时最多6000-7000行我担心的是，它会抓取数据并将其显示在可以多次访问的网页上（approximately up to 10,000 per day or less）——它真的会以某种方式使用file()过载服务器吗？还是对于这个小文件来说应该没问题请告诉我。谢谢你花时间阅读我的问题和可能的答案。

.txt文件中的示例行：

1,42,16, 201,stackoverflow_user, 1, 6762160, 39799, 9817242, 6762160, 39884, 10010545,stackoverflow_user, 2, 1351147, 1165, 483259, 1351147, 1115, 241630, 0 
1,46,27, 201,[stackoverflow_user | stackoverflow_userother], 1, 4078465, 286991, 1594830, 4078465, 287036, 1643156,stackoverflow_user, 2, 1357147, 1115, 241630, 1357147, 1065, 120815, 0

我的功能：

# read a file into an array
$lines = file('C:/path/to/file.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
# flip our array over so the last lines of the file are first.
$lines = array_reverse($lines);
$n = 1;
$wanted = 21; # or however many lines you want.
$content = '';
foreach ($lines as $l) {
   # treat the data as comma-separated values
   $arr = explode(",", $l);
   # if col 5 has multiple values, take the first one
   if (preg_match("/'[(.+?) '|/", $arr[4], $matches)) {
       $arr[4] = $matches[1];
   }
   # is arr[4] the same as arr[12]?
   if ($arr[4] !== $arr[12]) {
       # these two are not equal, so use these values
       $data = array('rank-pos' => $n++, 'rank-name' => $arr[4], 'rank-dmuser' => $arr[12]);
       $content .= Template::Load('rankinguserdm-' . ($n % 2 == 1 ? 2 : 1), $data);
   }
   # have we got enough data?
   if ($n === $wanted) {
       break;
   }
}
        $this->content = Template::Load('user_rankingsdm', array('rankings' => $content));
    }