I would like to develop a multilanguage page in PHP, for exemple english/german/japanese.. so when i click on german the page language will change to german, then i click en
One effective way of building multi-language websites is by not using hard coded labels but retrieving them from the appropriate language file, because basically what you need to do is to orient different users on your site. If you had data displayed which you store on a database maybe you should consider adding some database tables storing translations in different languages. To do some of the work in C# for example you can use Resource Files storing label values.