如何使用php DomXpath解析html，修改并保存

Question

After googling could not found anything related to my issue. Problem is: I parse page, find one table [there is four tables].

And when I found, I want to add one/some row/rows to table. But I don`t know how to do it. Some similar issues are about parsing xml and viewing content.

In code I have something like this:

$dom = new DOMDocument();
$dom->loadHTML($output->getHTML());
$xpath = new DOMXPath($dom);
$tableProp = $xpath->query('//*[@class="smwb-factbox"][2]');
....
$dom->asHTML();

Answer 1

Solution is simple: With set of methods such as createElement, setAttribute and appendChild I solved my problem, example as follows:

$dom = new DOMDocument();
$dom->loadHTML(mb_convert_encoding($output->getHTML(), 'HTML-ENTITIES', 'utf-8'));
$xpath = new DOMXPath($dom);
$tableProp = $xpath->query('//*[@class="smwb-factbox"][2]');
...
$th_el = $dom->createElement('th', $th_outer_inner_span_a_el);
...
$td_el = $dom->createElement('td', '');
$td_el->appendChild($td_el_outer_span);
$tr_el = $dom->createElement('tr', '');
$tr_el->setAttribute('class', 'smwb-propvalue');
$tr_el->appendChild($th_el);
$tr_el->appendChild($td_el);
$tableProp->item(0)->appendChild($tr_el);
$dom->saveHTML();
...

The idea is pretty simple. I have table in mediawiki, find it, create new row and insert it, after save it. That's all.