如何根据创建日期在PHP中从目录中删除文件? [英] How to delete files from directory based on creation date in php?

问题描述

我有一个存储html文件的缓存文件夹.它们会在需要时被覆盖，但是很多时候，很少使用的页面也会在那里缓存，最终仅占用空间(5周后，驱动器已满了270万个缓存文件).

I have a cache folder that stores html files. They are overwritten when needed, but a lot of the time, rarely used pages are cached in there also, that just end up using space (after 5 weeks, the drive was full with over 2.7 million cache files).

循环访问包含数十万个文件的目录并删除早于1天的文件的最佳方法是什么?

Whats the best way to loop thru a directory that contains several hundreds of thousands of files, and remove files that are older than 1 day?

推荐答案

我认为您可以通过使用readdir遍历目录并根据时间戳删除来解决此问题:

I think you could go about this by looping through the directory with readdir and delete based on the timestamp:

<?php
$path = '/path/to/files/';
if ($handle = opendir($path)) {

    while (false !== ($file = readdir($handle))) { 
        $filelastmodified = filemtime($path . $file);
        //24 hours in a day * 3600 seconds per hour
        if((time() - $filelastmodified) > 24*3600)
        {
           unlink($path . $file);
        }

    }

    closedir($handle); 
}
?>

if((time() - $filelastmodified) > 24*3600)将选择早于24小时(24小时乘以每小时3600秒)的文件.如果您希望使用几天，则对于一周以上的文件，它应显示为例如7 * 24 * 3600.

The if((time() - $filelastmodified) > 24*3600) will select files older than 24 hours (24 hours times 3600 seconds per hour). If you wanted days, it should read for example 7*24*3600 for files older than a week.

此外，请注意filemtime返回文件的最后修改时间，而不是创建日期.

Also, note that filemtime returns the time of last modification of the file, instead of creation date.

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