<?php /** 1.number_format */ $number = 1234.56789; $nombre_format_francais = number_format($number, 2, ',', ' '); $english_format_number = number_format($number, 2, '.', ''); /** 2.round */ $number = 1234.56789; echo round($number ,2); /** 3.sprintf */ $formatted = sprintf ("¥%01.2f。", $money); echo $formatted; ?>