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I need a regular expression that works in PHP and JavaScript to validate New Zealand local, mobile and freecall (0800) phone numbers.

Matches:     (09)1234567, (021)123456, (021)1234567, (027)123456, 0800 12345, 0800 1234578
Non-Matches: (09)123456 , (021)12345 , (031)1234567, (027)12345 , 0800-1234, 0800123456789

Below is a regular expression I found on the web but it does not seem to work for some reason:

(^([0]\d{1}))(\d{7}$)|(^([0][2]\d{1}))(\d{6,8}$)|([0][8][0][0])([\s])(\d{5,8}$)

Can someone please help with the expression above? Thank you for your help in advance.

UPDATE - I worked it out and the solution is below:

$phone_number = preg_replace('/[^\d\(\)]/', '', $phone_number);
$pattern = '/^(\((03|04|06|07|09)\)\d{7})|(\((021|022|025|027|028|029)\)\d{6,8})|((0508|0800|0900)\d{5,8})$/';

I need a regular expression that works in PHP and JavaScript to validate New Zealand local, mobile and freecall (0800) phone numbers.

Matches:     (09)1234567, (021)123456, (021)1234567, (027)123456, 0800 12345, 0800 1234578
Non-Matches: (09)123456 , (021)12345 , (031)1234567, (027)12345 , 0800-1234, 0800123456789

Below is a regular expression I found on the web but it does not seem to work for some reason:

(^([0]\d{1}))(\d{7}$)|(^([0][2]\d{1}))(\d{6,8}$)|([0][8][0][0])([\s])(\d{5,8}$)

Can someone please help with the expression above? Thank you for your help in advance.

UPDATE - I worked it out and the solution is below:

$phone_number = preg_replace('/[^\d\(\)]/', '', $phone_number);
$pattern = '/^(\((03|04|06|07|09)\)\d{7})|(\((021|022|025|027|028|029)\)\d{6,8})|((0508|0800|0900)\d{5,8})$/';

• php
• javascript
• regex

Share Improve this question Follow edited Mar 29, 2012 at 13:21 Chris asked Mar 24, 2012 at 9:03 ChrisChris 81455 gold badges1111 silver badges2323 bronze badges

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3 Answers 3

Sorted by: Reset to default 2

Why all those parentheses and brackets?

^(\(0\d\)\d{7}|\(02\d\)\d{6,8}|0800\s\d{5,8})$

You dont have to wrap everything in pair of parentheses to make it work. That's voodoo programming. For example, ([0][8][0][0]) is simply 0800.

There's not enough information about the formatting of NZ phone numbers in your question to be sure about this, but a trick may be to first remove all non digit characters and after that test for the number of digits (as far as I can see it should be 9 digits?). Something like:

var phonenr = '(09)1234567'.replace(/[\(\)\s\-]/g,'')
   ,valid   = phonenr.length === 9;
// or check if it's all digits, starting with 0 as well as the length
valid = /^0\d+$/.test(phonenr) && phonenr.length === 9

The answer is outdated, 020 is a valid mobile phone prefix now.

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