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hi and welcome to another PHP tutorial in this tutorial Im going to show you how to check that the user has entered data into a form using the is set function which is an inbuilt PHP function so basically what were going to do is check for set values so for this example Ill create a form with radio buttons itll be like a little quiz and the user must select an answer from one of the options so then we can have some code that will check that this selected an option and if they havent it will tell them to pick an answer and complete the form again otherwise if they have selected an option it will check their answer and tell them if they got it right or wrong so to start with Ive got two files here index.php okay and in that got some HTML code weve got the head section a title and Ive got a body section where Im about to place the form okay then I also have an action handler PHP file which will be used to handle the form data or take the form data and process it okay so in the bo
