How well can a bot identify a PHP script?

[Rohan_Hill]

Hi there, just wondering if anyone knows, if I have a file which has the .html extension but I've configured my server to execute it as a PHP script, is there any way at all that a search engine bot can tell that it's not a static HTML page? How about if I'm using .htaccess with a <Files> and a ForceType to make any request withing a directory execute a PHP script, if the url ends in .html, is there any way a bot can tell the difference?

Thanks for your help 🙂

[Weedpacket]

Not really; PHP can add a header to responses ("X-Powered-By: PHP/4.3.2"), which is how Netcraft does its surveys; but if the headers don't say and the content doesn't say, then no, the spider can't tell what generated the document.