php 将浮点数格式化为两位小数
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Format a float to two decimal places
提问by Niharika Gupta
I want to format a float value I have to two decimal places.
我想将浮点值格式化为两位小数。
For example if I have a float for a price of 5.2, I want it to be formatted as 5.20.
例如，如果我有一个价格为 的浮点数5.2，我希望它的格式为5.20.
回答by GBD
回答by FluffyHyman
You'll want to use printfor sprintf. You can read more about it in the php docs.
你会想要使用printf或sprintf。您可以在php docs 中阅读有关它的更多信息。
回答by John Parker
If you're simply trying to ensure a number is displayed with two decimal places, you could also use number_format, or (if this is a currency value) money_format.
如果您只是想确保数字显示为两位小数，您还可以使用number_format或（如果这是货币值）money_format。
e.g.: echo number_format('5.2', 2);
例如： echo number_format('5.2', 2);
回答by Danura Aditya
Try this:
尝试这个：
number_format((float)$foo, 2, '.', '');
