public static function seconds_to_minutes($seconds) {
	    $minResult = floor($seconds/60);
	    if($minResult < 10){$minResult = 0 . $minResult;}
	    $secResult = ($seconds/60 - $minResult)*60;
	    if($secResult < 10){$secResult = 0 . round($secResult);}
	    else { $secResult = round($secResult); }
	    return $minResult.":".$secResult;
	}