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    <p>Two possible solutions :</p> <ul> <li>You could loop over the files on the disk, testing the last modification time for each one of them -- and delete the oldest ones. <ul> <li>A first solution would be to work with <a href="http://fr2.php.net/opendir" rel="nofollow"><code>opendir()</code></a>/<a href="http://fr2.php.net/manual/en/function.readdir.php" rel="nofollow"><code>readdir()</code></a>/<a href="http://fr2.php.net/manual/en/function.closedir.php" rel="nofollow"><code>closedir()</code></a>, and <a href="http://fr2.php.net/filemtime" rel="nofollow"><code>filemtime()</code></a>.</li> <li>Another idea would be to work with iterators : <a href="http://fr2.php.net/manual/en/class.directoryiterator.php" rel="nofollow"><code>DirectoryIterator</code></a> or <a href="http://fr2.php.net/manual/en/class.recursivedirectoryiterator.php" rel="nofollow"><code>RecursiveDirectoryIterator</code></a>, and <a href="http://fr2.php.net/manual/en/splfileinfo.getmtime.php" rel="nofollow"><code>SplFileInfo::getMTime()</code></a>.</li> </ul></li> <li>Or, you could use a database, and : <ul> <li>Add a row to it each time a file is uploaded, containing the current time and date</li> <li>And use that database to determine which file are old enough to be deleted.</li> </ul></li> </ul> <p><br> The second idea is probably better than the first one : </p> <ul> <li>Yes, it means a bit more work right now, when you have to code the system</li> <li>But, if you have lots of files, going through all of them to find the old ones, with the first solution, will not be fast -- and might slow down your server for a while, when the disks are working, seeking for files.</li> </ul> <p><br> Note that the first solution could be enhanced quite a bit :</p> <ul> <li>Use a different folder for each day and hour <em>(<code>2011-04-10-10</code>, <code>2011-04-11</code>, <code>2011-04-10-12</code>, ...)</em></li> <li>And, then, only delete the directories <em>(and their content)</em> which are old enough</li> </ul> <p>With that, no need to search for files : just search for a couple of directories.</p>
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    1. PODelete uploaded files
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    1. USPascal MARTIN
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      1. VTUpMod
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    1. COIf you want to operation do be done on a regular basic *(especially, heavy maintenance operations)*, those should no be executed by the webserver when one visits a page. Instead, you should use the crontab -- see https://secure.wikimedia.org/wikipedia/en/wiki/Cron
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      1. USPascal MARTIN
    2. COThanks for the answer. Won't I have using PHP to for the job. I mean if the user leave the site before ending the process or lose connection in the middle. I worry the the file wile stay there for ever...
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      1. USyoni and tszi
 

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