A very interesting question - and closely related to the question of what internet technology will look like in 20 years time. What will scripting languages look like in a world where everything is interconnected and (potentially) 'intelligent', generating unimaginable amounts of data that need to be processed, managed and secured ? Hmmm ... wish I had a crystal ball !
The fact that my bank (a huge coporation) still uses classic ASP (remember that one ?) makes me think PHP will still be around in 20 years time in some shape or form.
Look at this stat - php powers more than 81% of websites today - it really surprised me ! w3techs.com/technologies/overview/programming_lan…