Your browser’s Accept header was “*/*”
This page’s MIME type is “text/html”
<?php
if ( array_key_exists("HTTP_ACCEPT", $_SERVER) &&
(stristr($_SERVER["HTTP_ACCEPT"], "application/xhtml") ||
stristr($_SERVER["HTTP_ACCEPT"], "application/xml") )
||
(array_key_exists("HTTP_USER_AGENT", $_SERVER) &&
stristr($_SERVER["HTTP_USER_AGENT"], "W3C_Validator"))
)
{
header("Content-type: application/xhtml+xml");
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
. "<!DOCTYPE html>\n"
. "<html xmlns='http://www.w3.org/1999/xhtml'>\n";
}
else
{
header("Content-type: text/html; charset=utf-8");
echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\""
. "\"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n"
. "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\">\n";
}
?>