[Delete Old] Delete files older than a given age (in seconds) #php #function #delete

delete_older_than.php

<?php

/* -------------------------------------------------------------------------------------------- */
/* [Delete Old] Delete files older than a given age (in seconds) recusiv #php #function #delete */
/* -------------------------------------------------------------------------------------------- */

// TEST
delete_older_than('limit', 1);
/**
 * delete_older_than()
 * delete files older than a given age (in seconds) recusiv
 * 
 * @see    https://gist.github.com/tdebatty/9412259
 * @see    https://www.php.net/manual/de/function.filemtime.php#32728
 * 
 * @param  [string]  $dir                [Path of the Folder that should be purged]
 * @param  [integer] $max_age_in_seconds [60*3 = 3 Minutes | 60*60*24*7 = 7 Days]
 * @param  [array]   $skip               [Array with Filenames that should never be deleted]
 */
function delete_older_than($dir, $max_age_in_seconds, $skip=array()) {
  $dir = realpath($dir);
  if (is_dir($dir)) {
    $limit = time() - $max_age_in_seconds;
    $objects = scandir($dir);
    foreach ($objects as $object) { 
      if ($object != '.' and $object != '..' and !in_array($object, $skip)) { 
        if (is_dir($dir.DIRECTORY_SEPARATOR.$object) && !is_link($dir.DIRECTORY_SEPARATOR.$object)) {
          delete_older_than($dir.DIRECTORY_SEPARATOR.$object, $max_age_in_seconds);
        } else {
          if (filemtime($dir.DIRECTORY_SEPARATOR.$object) < $limit) {
            unlink($dir.DIRECTORY_SEPARATOR.$object);
          }
        }
      } 
    }
    if (filemtime($dir.DIRECTORY_SEPARATOR.'.') < $limit) {
      rmdir($dir);
    }
  }
}