问题
I need to extract numeric values from strings like "£17,000 - £35,000 dependent on experience"
([0-9]+k?[.,]?[0-9]+)
That string is just an example, i can have 17k 17.000 17 17,000, in every string there can be 0,1 or 2 numbers (not more than 2), they can be everywhere in the string, separated by anything else. I just need to extract them, put the first extracted in a place and the second in another.
I could come up with this, but it gives me two matches (don't mind the k?[,.], it's correct), in the $1 grouping. I need to have 17,000 in $1 and 35,000 in $2, how can i accomplish this? I can also manage to use 2 different regex
回答1:
Using regex
With every opening round bracket you create a new capturing group. So to have a second capturing group $2, you need to match the second number with another part of your regex that is within brackets and of course you need to match the part between the to numbers.
([0-9]+k?[.,]?[0-9]+)\s*-\s*.*?([0-9]+k?[.,]?[0-9]+)
See here on Regexr
But could be that Solr has regex functions that put all matches into an array, that would maybe be easier to use.
回答2:
Match the entire dollar range with 2 capture groups rather than matching every dollar amount with one capture group:
([0-9]+k?[.,]?[0-9]+) - ([0-9]+k?[.,]?[0-9]+)
However, I'm worried (yeah, I'm minding it :p) about that regex as it will match some strange things:
182k,938 - 29.233333
will both be matched, it can definitely be improved if you can give more information on your input types.
回答3:
What about something along the lines of
[£]?([0-9]+k?[.,]?[0-9]+) - [£]([0-9]+k?[.,]?[0-9]+)
This should now give you two groups.
Edit: Might need to clean up the spaces too
来源：https://stackoverflow.com/questions/6508029/regex-multiple-matches-and-1-2-variables-quick-and-easy