XPath PHP解析HTML表 <td></td> 标签

Question

I am trying to parse html table in order to get <td> ID HERE </td> tag content using Xpath and PHP. Executing following line $doc->loadHTMLFile($file); gives me warnings like this:

PHP Warning: DOMDocument::loadHTMLFile(): Unexpected end tag : tr in...

That's why I am using the following block of code:

libxml_use_internal_errors(true); $doc->loadHTMLFile($file); libxml_clear_errors();

Trying to parse this: (the entire page here )

 <table class="object-table" cellpadding="0" cellspacing="0"> <tbody> <tr> <th width="8%">something here</th> <th width="89%">something here</th> <th width="3%">something here</th> </tr> <tr class="normal-row"> <td>ID number here</td> <td><a href="/catalog/view/id/4127">something here</a> </td> <td align="center"> <img src="/design/img/hasnt_photo_icon.gif"> </td> </tr> <tr class="odd-row"> <td>ID number here</td> <td><a href="/catalog/view/id/1865">something here</a> </td> <td align="center"> <img src="/design/img/hasnt_photo_icon.gif"> </td> </tr> </tbody> </table> 

with the following code:

$file = "http://www.sportsporudy.gov.ua/catalog/#c[1]=1";
$doc = new DOMDocument();

libxml_use_internal_errors(true);
$doc->loadHTMLFile($file);
libxml_clear_errors();

$xpath = new DOMXPath($doc);
$query = '//tr[@class="odd-row"]';


$elements = $xpath->query($query);
printf("Size of array: %d\n", sizeof($elements));
printElements($elements);

and tried using different queries like //table[@class="object-table"]/tbody/tr ... but doesn't seem to give me the td tags I need. Maybe that's because of the broken HTML.

Thanks for your advice.

Answer 1

Substantially, your code is fine.

The only error that I've found is in the printing $elements length: $elements is not an array, to retrieve its length you have to use this syntax:

printf( "Size of array: %d\n", $elements->length );

But the major problem that you have with your page is that the HTML has only one table with one row: the remaining data are filled with javascript, so you can't retrieve it directly through DOMXPath.