Just because a file ends in .PHP doesn't mean it responds with XHTML -- respond however you'd like!
Atom
1 | header('Content-Type: application/atom+xml'); |
CSS
1 | header('Content-Type: text/css'); |
Javascript
1 | header('Content-Type: text/javascript'); |
JPEG Image
1 | header('Content-Type: image/jpeg'); |
PNG Image
1 | header('Content-Type: image/png'); |
JSON
1 | header('Content-Type: application/json'); |
1 | header('Content-Type: application/pdf'); |
RSS
1 | header('Content-Type: application/rss+xml; charset=ISO-8859-1'); |
Text (Plain)
1 | header('Content-Type: text/plain'); |
XML
1 | header('Content-Type: text/xml'); |