re = /1?[\s-]?\(?(\d{3})\)?[\s-]?\d{3}[\s-]?\d{4}/m
str = '(123)456-7890
123-456-7890
1 407 555 2497
123 456 7890'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html