Extract US phone numbers from a string

Question

I am trying to extract US only phone numbers from a string.

I have looked around the web/SO but have not found any suitable solution for my needs.

To be honest, I have 2.5 years of experience in Web Programming but I suck at RegEX.

Here is only RegEX I wrote (\d{3}+\-\d{3}+\-\d{4}+)

but it only detects 589-845-2889

Here are phone numbers I want to extract.

589-845-2889

(589)-845-2889

589.845.2889

589 845 2889

5898452889

(589) 845 2889

Please tell me how can I achieve this feat in single Regex for PHP.

EDIT:

If you feel any other format of US number a user can enter, also mention that as well, and include that in RegEX as well.

P.S:

Actually I am trying to scrape Craiglist and user may have posted their phone number in any possible format.

Possible duplicate of [A comprehensive regex for phone number validation](http://stackoverflow.com/questions/123559/a-comprehensive-regex-for-phone-number-validation) — hugomg, Aug 04 '16 at 23:39

score 2 · Accepted Answer · answered Jul 05 '16 at 11:24

2

In PHP (PCRE) you can use this regex based on conditional subpatterns:

(\()?\d{3}(?(1)\))[-.\h]?\d{3}[-.\h]?\d{4}

(\()? matches optional ( and captures it in group #1
(?(1)\)) is conditional pattern that matches closing ) only if group #1 is not null i.e. ( is present on left of the match.

answered Jul 05 '16 at 11:24

anubhava

Why it has weird result? http://sandbox.onlinephpfunctions.com/code/b3b6cf795b8026c85d5c9bbdc04943978e94e8d0 – Umair Ayub Jul 05 '16 at 11:29
I mean, it returns 2 arrays, 1st array is fine, what is 2nd array is all about? – Umair Ayub Jul 05 '16 at 11:31
You should be using `var_dump($result[0]);` for your results. [Check this demo now](http://sandbox.onlinephpfunctions.com/code/1cc85f77cb46becf28711e9162c8ea601d752375) – anubhava Jul 05 '16 at 11:32
2nd array or `$result[1]` is showing first captured group which gets populated only when input starts with `(` – anubhava Jul 05 '16 at 11:33
1

+1 This has comments which will actually help the user going forward. Other answers are just solutions. Teach a man how to fish and all that. – webnoob Jul 05 '16 at 11:49

score 1 · Answer 2 · answered Jul 05 '16 at 11:20

1

Finally, it works:

^(\((\d{3})\)|(\d{3}))[\s\-\.]?\d{3}[\s\-\.]?\d{4}

tested in notepad++

answered Jul 05 '16 at 11:20

Michał M

2 Answers2