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For this problem, you are to cannibalize any available code and write a pair of scripts which will do the following.

1. The HTML Page: rectask.html
   • Ask the user for the dimensions of a rectangle
   • Accept input in a form
   • Using the Calculate button, send the data to a PHP script called rectcalc.php
2. The PHP Script: rectcalc.php
   • Check the data received to ensure that the values are possible; use die or exit to report problems and terminate execution
   • Check the length and the width and swap the values if necessary
   • Report the actual length and width
   • Calculate and report the perimeter, diagonal and area of the rectangle
   • Calculate and report the area of the largest circle which will fit inside the rectangle

To see how this could work, view this possible solution.