Sorry if it's to dumb or hacky solution, but can't you just create a Date with JavaScript and send it with your request in a hidden field? You could guess the timezone with this date and the server's one. I don't know what you're going to do with this info, just be aware that if the users clock is wrong intentionally or not, this will obviously not work correctly. Although I think (just an assumption) that 99% of user's clock are in fact, correct. Another thing I'm thinking now is for users out on a travel, if they aren't in their home, you will get a "wrong" date. I'm with Maciek on this, TimeZones doesn't change a lot, it's not too difficult to develop a simple "from/to" database based on the country and state/province names. You may even start a Open Source project and get collaborators to help maintain this database on an open format (okay, maybe this is not going to happen, maybe). Cheers, Samuel. On Sun, Oct 21, 2012 at 9:12 AM, Ashley Sheridan <ash@xxxxxxxxxxxxxxxxxxxx>wrote: > > > Karl DeSaulniers <karl@xxxxxxxxxxxxxxx> wrote: > > > > >On Oct 21, 2012, at 5:01 AM, Maciek Sokolewicz wrote: > > > >> On 21-10-2012 01:11, Karl DeSaulniers wrote: > >>>>> Thanks for the response. Yes, for the US I plan on calculating by > >>>>> state, but > >>>>> this website is not geared to just the US. > >>>>> So I am looking for a solution that lets me also calculate by > >>>>> country/region. > >>>>> Was looking on google and found geoip, but not sure if this will > >do > >>>>> the job > >>>>> I am looking for. > >>>>> Anyone with experience on geoip that can send pointers? > >>>>> > >>>>> Thanks, > >>>>> > >>>>> > >>>>> Best, > >>>>> Karl DeSaulniers > >>>>> Design Drumm > >>>>> http://designdrumm.com > >>>> > >>>> > >>>> Geo IP is based on IP, and I must warn you that IP data is not > >>>> always > >>>> accurate. Especially here in Europe, companies that are based in > >>>> multiple countries sometimes only register their IPs in a single > >>>> country, and share them between all the countries they are active > >>>> in. > >>>> This will give you wrong data from GeoIP. The time difference will > >>>> only be 1 hour at max, but still. > >>> > >>> > >>> That was what my own suspicions were leading to. > >>> I am familiar with the fact that ips can be spoofed. > >>> Thanks for the corroboration. > >>> > >>> Best, > >>> > >>> Karl DeSaulniers > >>> Design Drumm > >>> http://designdrumm.com > >>> > >> > >> As Bart said, IP is not ideal for this situation. > >> > >> Since you do have information about the location of that person (as > >> in country and possible state), you can find out the timezone via a > >> static database. > >> > >> The HTML5 geolocation tool is nice, and would certainly help a lot! > >> However, be aware of the fact that it only works if there is the > >> device on which the browser runs actually has the ability to find > >> out its location. Many smartphones have GPS chips, but most PCs > >> don't. Asking a PC "where are you located?" the PC will answer "How > >> should I know?". > >> > >> Luckily for you, the way of country and state is pretty easy. I've > >> handed you a list to find it in the USA. For most countries in the > >> world, there's a simple 1:1 mapping of timezone and country > >(http://en.wikipedia.org/wiki/List_of_time_zones_by_country > >> ), there are however 21 countries which have multiple timezones. In > >> these cases, you'll need extra information to be able to distinguish > > > >> between them. > >> > >> For the USA, you already have a way. > >> For (ex-)colonical islands and such (such as for France), you could > >> always add them to the country list: > >> - France > >> - France (Marquesas Islands) > >> - France (Gambier) > >> etc. > >> Thus treating them as separate countries for your timezone db. > >> > >> In Russia, Canada, Australia, New Zealand, Brasil, Indonesia, > >> Kiribati, Mexico,Congo, Ecuador, Micronesia, Kazakhstan and Mongolia > > > >> you'll need to know their province / state to more accurately assess > > > >> the ideal timezone. > >> > >> So for most countries, it's a simple 1:1 translation. For the above > >> countries, you'll need some extra info, and translate further based > >> on that. You should be able to find the info required yourself, it > >> just takes a while to collect it. > >> > >> Alternatively, and this is the most simple way; since you're asking > >> people for their country and such, simply also ask them about their > >> timezone. Don't bother automating and putting a heck of a lot of > >> time into hard to realize solutions, when you can ask a very simple > >> and easy-to-answer question to the browser instead. :) > >> > >> - Tul > > > > > >Yes, I had thought about asking the user his/her timezone, but being > >that the product will be bought by some people who may have no idea, I > > > >figured I would try and see if I can set it up myself. > >Maybe if the country has a province, i could ask the user then what > >province and get my 1:2 that way. If it is a country I can get the > >timezone for, just skip that question. > >Thanks for the thoughts! > > > >Best, > > > >Karl DeSaulniers > >Design Drumm > >http://designdrumm.com > > Don't most browsers include this information in the HTTP headers? > -- > Sent from my Android phone with K-9 Mail. Please excuse my brevity. > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >
