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From: Sandman <mr@sandman.net>
Newsgroups: comp.lang.php
Subject: Re: Phone number formatting
Date: Fri, 25 Nov 2011 09:09:19 +0100
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In article <4ece601a$0$28675$a8266bb1@newsreader.readnews.com>,
 Denis McMahon <denismfmcmahon@gmail.com> wrote:

> On Thu, 24 Nov 2011 08:39:17 +0100, Sandman wrote:
> 
> > So, I have a list of phone numbers in various formats I.e. the users
> > have written them in different styles, with and without dashes, spaces
> > and so on.
> > 
> > Now I want to format them. I have a text file with all the area codes
> > for Sweden, so I remove any non-digit character from the phone number
> > and then I parse out the area code. I am now left with the phone number.
> > An example:
> > 
> >     In-data: 0703051947
> >     Parse out area code: 070
> >     Phone number: 3051947
> > 
> > Now, I have an array with formattings, that looks like this:
> > 
> > $formats = array("### ##", "## ## ##", "### ## ##");
> > 
> > The phone number above is never more than 7 digits long (as far as I
> > know) in Sweden, so these formats should suffice. Let me explain, in the
> > array, we have formats for 5, 6  and 7 digit phone numbers, set up in a
> > specific way. So this phone number in my example above is 7 digits, so
> > it should be formatted as such:
> > 
> >     305 19 47
> > 
> > With me so far? What I don't know is exactly how to do it. This is my
> > code thus far:
> > 
> >     $number = "3051947";
> >     foreach ($formats as $f){
> >         $chars = strlen(preg_replace("/[^#]/", "", $f));
> >     }
> 
> Not sure why you want to use preg_replace for this
> 
> switch(strlen($number)) {
> case 5: $chars = substr($number,0,3) . " " . substr($number,3,2); break;
> case 6: $chars = substr($number,0,2) . " " . substr($number,2,2) . " " . 
> substr($number,4,2); break;
> case 7: $chars = substr($number,0,3) . " " . substr($number,3,2) . " " . 
> substr($number,5,2); break;
> default: // handle any unexpected number lengths
> }
> 
> Some code purists say that you should use multiple if / if else / else 
> instead of switch, make your own mind up.
> 
> $digits = strlen($number);
> if ($digits == 5) {
>   $chars = substr($number,0,3) . " " . substr($number,3,2);
> }
> else if ($digits == 6) {
>   $chars = substr($number,0,2) . " " . substr($number,2,2) . " " . substr
> ($number,4,2);}
> else if ($digits == 7) {
>   $chars = substr($number,0,3) . " " . substr($number,3,2) . " " . substr
> ($number,5,2);
> }
> else {
>   // handle any unexpected number lengths
> }
> 
> Rgds
> 
> Denis McMahon

That... totally removed my handy array of formats :)

I kind of want that one :)



-- 
Sandman[.net]