带有区号的电话＃国家代码的正则表达式

Question

I need a regex to match this country-code + area code phone # format:

1-201

where the first two characters are always 1- and the last 3 characters are digits between 201 and 989.

I have ([1][\-][0-9]{3}) currently to specify the 1-xyz and limit length but how can I have the last group to restrict those ranges?

This will be used in PHP.

Answer 1

Use this regex:

^1\-(2\d[1-9])|([3-8]\d{2})|(9[0-8]\d)$

Here is an explanation of the three capturing groups/ranges:

(2\d[1-9]) matches 201 to 299
([3-8]\d{2}) matches 300 to 899
(9[0-8]\d) matches 900 to 989

Here is a link where you can test this regex:

Regex101

Update:

Apparently Laravel doesn't like having so many nested capture groups, but this simplification should work for your needs:

1-(2\d[1-9]|[3-8]\d{2}|9[0-8]\d)