If you have the timezone offset stored for each contact, you can compare
that to the timezone offset of the server and do the math on a timestamp
value.  
 
// return value format:  hhmm
// -0500 for US/EST, -5 hours relative to GMT
$timeZoneOfServer = date("O");

> -----Original Message-----
> From: Richard Kurth [mailto:[EMAIL PROTECTED] 
> Sent: Tuesday, January 30, 2007 12:12 AM
> To: php-general@lists.php.net
> Subject: RE: [PHP] time
> 
> [snip]
> I am writing a program for managing leads and contacts. I 
> would like to add
> the ability to see what TIME it is where the contact is not 
> there server
> time. So if you looked at a list of contacts from all over 
> the country you
> would see different times compared to what time it is where 
> the user is at.
> What should I be looking at to calculate out the different time zones.
> Could
> somebody just point me in the write direction at this time I 
> have no idea on
> how to proceeded.
> [/snip]
> 
> You would use JavaScript to capture their local 'browser' 
> time and process
> it with PHP
> 
> I am not looking for something where I am on line with these 
> people some do
> not have internet access. I would be calling them on the phone.
> I need a way to get the time at there location using what 
> info I already
> have like the address zip code and phone number. It would 
> probably have to
> be compared to a database of some sort or the time zone file on a lynx
> server.
> 
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