Create a web page ( html document) that includes a form with the following  features:
a text box labeled student name for the student's name, and four text boxes labeled grade1, grade2, grade3 and grade4.
You should include a PHP script in the html document to take the input from these four boxes and calculate the stunen'ts
average grade. Your PHP script should create a new html page that displays the student name and his or her average .