Challenge: Showing "Congratulations!"

Problem statement

Here is a coding challenge that incorporates all the concepts that we have covered up to this point.

You are going to create a PHP script that shows “Congratulations!” in a language selected by the user. When you come back to the page, it should still know what language the user selected earlier. We will use a cookie for that.

Tasks:

• Create a congratulations.php script that shows an HTML <select> element with two options, English and Dutch.
• Add a submit button and make sure to put these elements in an HTML form.
• Make sure the selected language gets submitted as a query parameter called language.
• If the query parameter language exists, we should copy its value to a cookie called language.
• If the query parameter doesn’t exist, we should look for a cookie called language.
• If the cookie doesn’t exist, we should fall back to the default language, which is English.
• Below the form, show “Congratulations!” in the selected language. When Dutch is selected, show “Gefeliciteerd!”.
• Verify that your code is flexible enough by adding one or more additional languages.
• What should happen if you call the page with ?language=invalid?