/**
* Cleans the file name
*
* @param $filename
*
* @return string
*/
public function clean_file_name($filename)
{
// Remove bad chars
$filename = parent::clean_file_name($filename);
// Spaces
if ($this->remove_spaces == TRUE) {
$filename = preg_replace("/\\s+/", "_", $filename);
}
// Foreign chars
if ($this->clean_foreign_chars) {
$filename = convert_accented_characters($filename);
}
$filename = preg_replace('/[^a-zA-Z0-9\\/_.|+ -]/', "_", $filename);
$filename = preg_replace("/[\\/_|+ -]+/", "_", $filename);
// Remove first and last not wanted chars
$filename = trim($filename, '_-. ');
return $filename;
}