README

This is an implementation of the tokenization and tree-building parts of the HTML5 specification in PHP. Potential uses of this library can be found in web-scrapers and HTML filters.

Warning: This is a pre-alpha release, and as such, certain parts of this code are not up-to-snuff (e.g. error reporting and performance). However, the code is very close to spec and passes 100% of tests not related to parse errors. Nevertheless, expect to have to update your code on the next upgrade.

Usage notes

<?php
use HTML5Lib\Parser;
$dom = Parser::parse('<html><body>...');
$nodelist = Parser::parseFragment('<b>Boo</b><br>');
$nodelist = Parser::parseFragment('<td>Bar</td>', 'table');
?>

Documentation

Parser::parse($text)
    $text  : HTML to parse
    return : DOMDocument of parsed document

Parser::parseFragment($text, $context)
    $text    : HTML to parse
    $context : String name of context element
    return   : DOMDocument of parsed document

Developer notes

To setup unit tests, you need to add a small stub file test-settings.php that contains $simpletest_location = 'path/to/simpletest/'; This needs to be version 1.1 (or, until that is released, SVN trunk) of SimpleTest.
We don't want to ultimately use PHP's DOM because it is not tolerant of certain types of errors that HTML 5 allows (for example, an element "foo@bar"). But the current implementation uses it, since it's easy. Eventually, this html5lib implementation will get a version of SimpleTree; and may possibly start using that by default.
The original implementation of this performed line and column tracking in place. However, it was found that this approximately doubled the runtime of tokenization, so we decided to take a more optimistic approach: only calculate line/column numbers when explicitly asked to. This is slower if we attempt to calculate line/column numbers for everything in the document, but if there is a small enough number of errors it is a great improvement.

electrolinux/php-html5lib

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