function getImageArray($dir, $depth = 0, $max_depth = -1, $extension = array('jpg', 'gif', 'png'))
{
if ($max_depth >= 0 && $depth > $max_depth || $depth == 10) {
return array();
}
//end if
$images = array();
$handle = @opendir($dir);
while ($file = @readdir($handle)) {
if ($file != '.' && $file != '..') {
$file_name = $dir . $file;
if (is_dir($file_name)) {
if ($file != '_vti_cnf' && $file != '.AppleDouble') {
$new_depth = $depth + 1;
$additional_images = PSUFiles::getImageArray($file_name . '/', $new_depth, $max_depth);
$images = array_merge($images, $additional_images);
}
//end if
} elseif (substr($file, 0, 1) != '.') {
$path_info = pathinfo($dir . '/' . $file_name);
if (in_array($path_info['extension'], $extension)) {
$images[] = $file_name;
}
//end if
}
//end elseif
}
//end if
}
//end while
@closedir($handle);
return $images;
}
/**
* selects a random file from a given directory
*/
public function _random()
{
if ($this->type == 'image') {
$files = PSUFiles::getImageArray($this->base_dir . $this->dir, 0, $this->depth);
} else {
$files = PSUFiles::getImageArray($this->base_dir . $this->dir, 0, $this->depth, array('txt', 'html'));
}
//end if
$this->set(PSUFiles::chooseRandomElement($files));
}