Multilanguage web site in PHP

Few day earlier I have a done a project that have Multilanguage supported. It was quite interesting for me. Because it is automatically select your language. Like if you come from Bangladesh then its show bangle and if you come from England then its show English. Just not stop there its show the currency automatically. But I want to give thanks to the phpclasses forum that’s help me a lot to do this project.
Now this article I want to share a little tool of PHP. That tool helps who want to make Multilanguage website. Now a days many site use this Multilanguage option in there website. I write a few PHP code here for how to add Multilanguage options in your site. This gives you an idea. Its very easy code here downloads the codes from here and run into your localhost or your server.
Here I write the PHP code of the language change function that I create.
Here it is,

This code is not enough to run. To make it functionally, download Multilanguagesite.rar and test it into you server. Few more things needed a bangla unicode for change into bangla. And modify the language files and make different your website with Multilanguage support.:-)