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Re: [PHP] Re: Regex for telephone numbers

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On 12/31/2010 11:10 AM, ash@xxxxxxxxxxxxxxxxxxxx wrote:
Erm, you say regex is overkill, then use one in your example!

Thanks,
Ash
http://www.ashleysheridan.co.uk

----- Reply message -----
From: "Al"<news@xxxxxxxxxxxxx>
Date: Fri, Dec 31, 2010 15:53
Subject: [PHP] Re: Regex for telephone numbers
To:<php-db@xxxxxxxxxxxxx>,<php-general@xxxxxxxxxxxxx>



On 12/29/2010 7:12 PM, Ethan Rosenberg wrote:
Dear List -

Thank you for all your help in the past.

Here is another one....

I would like to have a regex which would validate that a telephone number is
in the format xxx-xxx-xxxx.

Thanks.

Ethan

MySQL 5.1 PHP 5 Linux [Debian (sid)]


Regex is over-kill.

$phoneNum = preg_replace("%\D%", '', $phoneNum);//Remove everything except digits

$phoneNum = ltrim($phoneNum,'1');//Remove leading 1s

if(strlen($phoneValue) != 10)
      {
throw new Exception("Phone number must be 10 digits, without leading a 1. Check
your entry carefull");
      }


Save and use the resultant $phoneNum; It is all that needs to be saved and used. Dashes, spaces and () are superfluous. Only the 10 digits are required for his application.

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