<?php 
/* 
 * mrlemonade ~ 
 */ 
function getFilesFromDir($dir) { 
  $files = array(); 
  if ($handle = opendir($dir)) { 
    while (false !== ($file = readdir($handle))) { 
        if ($file != "." && $file != "..") { 
            if(is_dir($dir.'/'.$file)) { 
                $dir2 = $dir.'/'.$file; 
                $files[] = getFilesFromDir($dir2); 
            } 
            else { 
              $files[] = $dir.'/'.$file; 
            } 
        } 
    } 
    closedir($handle); 
  } 
  return array_flat($files); 
} 
function array_flat($array) { 
  foreach($array as $a) { 
    if(is_array($a)) { 
      $tmp = array_merge($tmp, array_flat($a)); 
    } 
    else { 
      $tmp[] = $a; 
    } 
  } 
  return $tmp; 
} 

// Define the folder to clean
$captchaFolder = 'data/cache';
// Here you can define after how many
// days the files should get deleted
$expire_time = 5; 
// Find all files of the given file type
foreach (getFilesFromDir($captchaFolder) as $Filename) {
        // Read file creation time
        $FileCreationTime = filectime($Filename);
        // Calculate file age in seconds
        $FileAge = time() - $FileCreationTime; 
        // Is the file older than the given time span?
        if ($FileAge > ($expire_time*60*60*24 )) {
            // Now do something with the olders files...
            print "The file $Filename is older than $expire_time days \n";
            // For example deleting files:
            // unlink($Filename);
        }
}
echo 'ran';
?>