正则表达式匹配值，以货币符号/代码为前缀/后缀

Question

I need a regex to match & extract a decimal value prefixed (or suffixed) by its currency. Here are some examples

10$
10.01 $
$ 10.012
61 USD
£ 50.51
94 GBP

Found this \\p{Sc} very useful, but insufficient for what i need.

Answer 1

怎么样：

((?:\p{Sc}|[A-Z]{3})?\s*\d+(?:\.\d+)?\s*(?:\p{Sc}|[A-Z]{3})?)

Answer 2

This regex should work on PCRE regex engines (since it is using branch reset feature ):

(?|(\p{Sc}|USD|GBP) *(\d+(?:\.\d+)?)|(\d+(?:\.\d+)?) *(\p{Sc}|USD|GBP))

RegEx Demo

This produces following MATCH information for your input data:

MATCH 1
1. 10
2. $

MATCH 2
1. 10.01
2. $

MATCH 3
1. $
2. 10.012

MATCH 4
1. 61
2. USD

MATCH 5
1. £
2. 50.51

MATCH 6
1. 94
2. GBP