How to display PHP & HTML source code on a page?

Question

How would one go about showing PHP code on user end. Sort of like w3School does?

Having lets say a grey area div, and then showing the code in there without activati

Answer 1

You can use this template........

######################################################################
echo "

Source Code of ".basename((string)__FILE__) . "
";
show_source(__FILE__);
echo "
";
echo "
Output of ".basename((string)__FILE__) . "
";
#######################################################################

It will show the source code and output following.