PHP - 使用ajax更改语言的按钮[关闭]

i need a simple php code that will change a variable after clicking on button that show languages here how

Change language

on click show languages

english value= en frensh value= fr

if i click a english it set $language=en

You can try it by using ajax/JQuery.Some thing like this

 $.ajax({
         async: false,
         url: 'getlangg.php',
         success: function(data) {
         last_id=data;

                      }
        });

And use php code something like this

SELECT langg FROM yourtable
echo $langg;