$fname = str_replace('%t', $timeframe, $fname);
$fname = str_replace('%f', $fmt_ext, $fname);
if (substr($fname, -strlen($fmt_ext)) != $fmt_ext) { $fname .= $fmt_ext; }
$fname = str_replace('%t', $timeframe, $fname);
$fname = str_replace('%f', $fmt_ext, $fname);
if (substr($fname, -strlen($fmt_ext)) != $fmt_ext) { $fname .= $fmt_ext; }