PHP浮动小数点后两位:.00 [英] PHP float with 2 decimal places: .00

问题描述

当我进行此类型转换时:

When I do this typecasting:

(float) '0.00';

我得到0.如何获取0.00并仍然具有浮点数据类型?

I get 0. How do I get 0.00 and still have the data type as a float?

推荐答案

浮点数没有0或0.00:浮点数是内部字符串( ="http://en.wikipedia.org/wiki/IEEE_floating_point" rel ="noreferrer"> IEEE754 )二进制格式，但浮点数相同.

A float isn't have 0 or 0.00 : those are different string representations of the internal (IEEE754) binary format but the float is the same.

如果要将浮点数表示为"0.00"，则需要使用数字格式:

If you want to express your float as "0.00", you need to format it in a string, using number_format :

$numberAsString = number_format($numberAsFloat, 2);

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