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Regex: match digits-digits_digits-digits

原文 2017-05-03 12:30:43 5 1 php/ regex

I want to match

123-123
or
123-123_123-123

I do not want to match

123_123
or
123-123 not underscore 123-123
or
123--123

I tried

(\d+)-(\d+)

1 answers

You could try this:

/^(?:(\d+)-(\d+)_(\d+)-(\d+))$|^(?:(\d+)-(\d+))$/

Working example based on your input here: https://regex101.com/r/1GOOzQ/2

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