Let's do this another (and the more correct way).
In colorselect.php change to GET to POST.
<form method=POST action='color.php'>
Using GET, if you watch the URL when you get to color.php, you will notice the following appended to the
http://localhost/color.php
?color=blue (or whatever color you selected)
So the GET method allows us to see what was sent to the page - which is very helpful for error checking or finding out what has gone wrong if things are not working.
POST hides this info - better to use since we sometimes don't want to broadcast what we are sending. So use GET to make sure everything was sent correctly, It was, so we know the fault does not lay with colorselect.php, but with color.php, since the color is seemingly not picked up.
If you, for example, add echo "$color"; to the top of the page, it should print "blue" or whatever, since PHP turns color=blue (which was sent to the page in the URL) automatically into the variable $color, and assigns is the value blue.
BUT, bacause of the security reasons mentioned, changes are taking place as PHP is upgraded.
Add $color=$_POST['color']; to the top of color.php. This tells the server to extract 'color' from 'POST' and assign it to $color.
So, always use $whatever=$_POST['the_formarea_input']; when using forms.
