Question

First thing: I know that there is interface to W3C validator: http://pear.php.net/package/Services_W3C_HTMLValidator/
But I don’t know if I can install it on cheap hosting server. I don’t think so.

I need validator for my seo tools within my Content Managment System so it must be pretty much portable.

I would love to use W3C but only if it would be portable. I can also use Curl for this but it won’t be elegant solution.

The best one I found so far is: http://phosphorusandlime.blogspot.com/2007/09/php-html-validator-class.html

Is there any validator comparable to W3C but portable (only PHP that does not depend on custom packages)?

Answer 1

If you want to validate (X)HTML documents, you can use PHP’s native DOM extension:

• DOMDocument::validate — Validates the document based on its DTD

Example from Manual:

$dom = new DOMDocument;
$dom->load('book.xml'); // see docs for load, loadXml, loadHtml and loadHtmlFile
if ($dom->validate()) {
    echo "This document is valid!\n";
}

If you want the individual errors, fetch them with libxml_get_errors()