PHP/Javascript - Posting parameters to page, then parsing new html?

FINAL EDIT:

I got the DOMxpath query to work using the following code:

$divs = $xpath->evaluate("/html/body//div/table[@id='resulttable']");

I don't understand, though, why this code doesn't work the same way:

开发者_运维技巧$divs = $xpath->query("//table[@id='resulttable']");

ANY IDEAS?

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ok. The classes aren't actually listed and searched dynamically via Javascript, it's a pretty standard static form... you're going to want to use cURL to get the generated pages by submitting your required POST parameters. your POST parameters are:

0       TERM    select                  
1       DIVS    select                  
2       CAMPUS  select                  
3       SUBJ    select          4       
4       ATTR    select                  
5       CREDIT  select                  
6           submit  Search

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You can POST and fetch results using curl in PHP. Try this tutorial http://www.electrictoolbox.com/php-curl-form-post/

Also, you can figure out what parameters to post by inspecting AJAX request in Firebug

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Adding another answer since this is a totally different question now.

I don't know why it's not working, everything is ok according to manual. But may I suggest using phpQuery instead? I tried that when I had a similar task. This way you can rewrite you expression as

/** @var $pq phpQuery */
$divs = $pq->find('table#resulttable');

and use other familiar jQuery methods.