php保留小数和js四舍五入函数toFixed的用法:
<html>
<head> </head>
<script type="text/javascript">
document.write("<h1>php保留小数和js四舍五入函数toFixed的用法-php自学网</h1><br>");
var a=2.1512131231231321;
document.write("原来的值："+a+"<br>");
document.write("两位小数点:"+a.toFixed(2)+"<br>四位小数点"+a.toFixed(4));
</script>
<body>
</body>
</html>
php保留两位小数例子 - 四舍五入
1.number_format
$number = 1234.5678;
$nombre_format_francais = number_format($number, 2, ',', ' '); // 1 234,57
$english_format_number = number_format($number, 2, '.', ''); // 1234.57
2.round
$number = 1234.5678; echo round($number ,2); //1234.57
3.sprintf
$formatted = sprintf ("%s有￥%01.2f。",$name, $money);
echo $formatted; //张三有￥123.10。