DOMDocument with XPath Encoding

Question

$convertedhtml = urlencode(mb_convert_encoding($htmlcode,'UTF-8',"auto"));
$doc = new DOMDocument();
$doc->loadHTML($convertedhtml);

$xpath = new DOMXpath($doc);
$elements = $xpath->query("//*[@id='detail']/div[1]/h3/text()");
$elements->item(0)->nodeValue;

return ($elements->item(0)->nodeValue);

The website is in gbk encoding. If i do a Convert , it will not even show anything, but if i dont convert, it doesnt show the correct characters.

Any idea ? From what i know, mb_* doesn't support gbk?

stackoverflow.com/questions/3265824/php-utf-8-to-gb2312

Rikesh
– Rikesh

2013-07-03 12:29:29 +00:00
Commented Jul 3, 2013 at 12:29 — Rikesh
– Rikesh, Commented Jul 3, 2013 at 12:29
@Rikesh GBK to UTF because xpath needs it to be in UTF-8 ?

JohnDotOwl
– JohnDotOwl

2013-07-03 12:36:26 +00:00
Commented Jul 3, 2013 at 12:36 — JohnDotOwl
– JohnDotOwl, Commented Jul 3, 2013 at 12:36

Community · Accepted Answer · 2017-05-23 12:09:42Z

The DOMDocument::loadHTML() method does not expect an UTF-8 encoded string. So you can say it is an exception to the many other methods in the DOM extension because all those expect an UTF-8 encoded string. Same btw. applies to all methods of the DOM extension that care about loading XML/HTML data from either a file, a remote-location or a string. They follow different and more complex rules for the encoding of the string.

Encoding for DOMDocument::loadHTML():

If the HTML string you pass in there does not contain any hinting on the encoding (e.g. inside meta-tags), then the encoding of the string must be Latin-1.

If the string does have a hint of the encoding, then it needs to be in that hinted encoding and that one needs to be one of the supported encodings.

Notes:

I'm not aware if a list of supported encodings exists.
As you don't show your HTML code you load in there, I can't say if it contains a hint on the encoding.
I'm not aware if a list of all supported ways to hint the encoding with HTML for DOMDocument::loadHMTL() exists.

However: For an example on how to load a HTML document or fragment of a specific encoding see this related answer of mine:

PHP DomDocument failing to handle utf-8 characters (☆)

It most likely will show you how you can load your HTML. It also explains this in more detail. Let me know if it doesn't solve your issue.

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