如何删除PHP中小数点后第三位后的结尾零？ [英] How to delete trailing zeros after the 3rd decimal place in PHP?

问题描述

预先感谢。

我有一家WP WooCommerce商店，需要上传一些具有小数点后三位的价格，例如£0.012（购买数量为000的产品）。

我的大部分产品都是普通产品，保留小数点后两位。

WooCommerce中有一个函数允许保留小数点后3位-很好。也是删除尾随零的函数，但是如果是整数，则会删除尾零。 £10.00变成£10。

当普通价格产品的95％开始显示£10,000或£5.230时，我的问题就出现了。

简而言之，我正在寻找一种删除尾随零但仅在小数点后三位之后的方法；

保留-£0.012
删除价格为£10.00或£5.23的第3个小数0

有人能找到好的解决方案吗？

谢谢

解决方案

如果要使用正则表达式，可以将它们与

$ b匹配$ b

 （？< = \d {2}）（0 +）$ 
 
 preg_replace（ /（？< = \ d {2}）（0 +）$ /，，$ price_string）
  

至少两位数字之后的所有零。 （它将与括号内的零匹配）：

  12.002（0）
 12.00（0000）
 12.01（000000）
 12.232（0）
 12.123 
  

thanks in advance.

I have a WP WooCommerce store and need to upload some prices that have 3 decimal places, e.g. £0.012 (products that are purchased in volumes of 000s).

The majority of my products are 'ordinary' with 2 decimal places.

There is a function in WooCommerce that allows for 3 decimal places - fine. Also a function to delete trailing zeros, but it deletes them if it's an integer e.g. £10.00 becomes £10.

My problem arises when the 95% of 'ordinary' price products start showing £10.000 or £5.230.

In a nutshell I'm looking for a way to delete trailing zeros but ONLY after the 3 decimal place;

Retain - £0.012 Delete any 3rd decimal 0 on prices like £10.00 or £5.23

Does anyone have a good solution?

Thanks

解决方案

If you want to use regular expressions you can match them with

 (?<=\d{2})(0+)$

 preg_replace("/(?<=\d{2})(0+)$/", "", $price_string)

to match all zeroes which come after at least two digits. (It will match the zeroes in parenthesis):

12.002(0)
12.00(0000)
12.01(000000)
12.232(0)
12.123

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