Serving up “application/xhtml xml”
-
If the following bit of code, by Neil Crosby, is used instead of
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">then your pages will serve up as application/xhtml+xml to browsers woman enough to understand it, and html/text to Internet Explorer. It also has the bonus of telling the W3C validator that it is xml. Whilst it is the kind of thing I would like to see built into WordPress I realise that serving up web pages as XML isn’t everyone’s cup of tea, invalid=won’t load.
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
I am useless with PHP unless the task is cutting and pasting or simpler, but I thought that someone else might well find this useful or have an idea how to crowbar it into WordPress with greater aplomb.
<?php
$charset = "utf-8";
$mime = "text/html";
function fix_code($buffer) {
return (str_replace(" />", ">", $buffer));
}
if(stristr($_SERVER["HTTP_ACCEPT"],"application/xhtml+xml")) {
# if there's a Q value for "application/xhtml+xml" then also
# retrieve the Q value for "text/html"
if(preg_match("/application\/xhtml\+xml;q=0(\.[1-9]+)/i",
$_SERVER["HTTP_ACCEPT"], $matches)) {
$xhtml_q = $matches[1];
if(preg_match("/text\/html;q=0(\.[1-9]+)/i",
$_SERVER["HTTP_ACCEPT"], $matches)) {
$html_q = $matches[1];
# if the Q value for XHTML is greater than or equal to that
# for HTML then use the "application/xhtml+xml" mimetype
if($xhtml_q >= $html_q) {
$mime = "application/xhtml+xml";
}
}
# if there was no Q value, then just use the
# "application/xhtml+xml" mimetype
} else {
$mime = "application/xhtml+xml";
}
}
# special check for the W3C_Validator
if (stristr($_SERVER["HTTP_USER_AGENT"],"W3C_Validator")) {
$mime = "application/xhtml+xml";
}
# set the prolog_type according to the mime type which was determined
if($mime == "application/xhtml+xml") {
$prolog_type = "<?xml version='1.0' encoding='$charset' ?>
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.1//EN'
'http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd'>
<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en'>";
} else {
ob_start("fix_code");
$prolog_type = "<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN'
'http://www.w3.org/TR/html4/strict.dtd'>
<html lang='en'>";
}
# finally, output the mime type and prolog type
header("Content-Type: $mime;charset=$charset");
header("Vary: Accept");
print $prolog_type;
?>
- The topic ‘Serving up “application/xhtml xml”’ is closed to new replies.