On my WAMP installation, when I link to a .php file through localhost, I get a 'File Download' window offering 'Open', 'Save', 'Cancel'. If I click on 'Open', the .php file is opened in Internet Explorer with any <html> code executed OK but and <?php ...> code ignored. Until recently the .php file ran as expected with no 'File Download' window but immediate display of the web page including both <html> and <?php ...> output. I have had Windows problems which I have had to fix. Are there any links or pointers etc that I need to reset in the WAMP package.
Thanks for suggestions. None worked (or I misapplied them) so I have uninstalled Wamp, deleted the wamp folder, and reinstalled. Now all parts of the package (html, php, mysql) run OK but I've lost any chance of finding out what was wrong. I'll settle for that.