类中的简单html dom空间

Question

the following class I would like to reference using simple html dom

but there is 2 classes one

is

class="price"

the other appears to be class=" price"

using this code does not appear to find it

foreach ($html1->find('[class= price ]/text()',0) as $price_data2)

the source for the page in question is here

http://www.amazon.com/Likeable-Social-Media-Irresistible-ebook/dp/B00511ONPG/ref=tmm_kin_title_0?ie=UTF8&qid=1367741120&sr=8-1

Answer 1

An example with DOMDocument querying the class attribute value verbatim (with spaces around):

// configuration
libxml_use_internal_errors(true);

// input
$url = 'http://www.amazon.com/Likeable-Social-Media-Irresistible-ebook/dp/B00511ONPG/ref=tmm_kin_title_0?ie=UTF8&qid=1367741120&sr=8-1';

// processing
$doc = new DOMDocument();
$doc->loadHTMLFile($url);
$xpath = new DOMXPath($doc);
$prices  = $xpath->query("//*[@class=' price ']/text()");

// output
foreach($prices as $index => $price) {
    printf("%d: %s\n", $index, trim($price->textContent));
}

Output:

0: $14.81
1: $18.38
2: $11.58
3: --
4: 
5: 

Please note that the URL you gave contains invalid HTML. Therefore the simpledom parser might produce different results (or does not work at all) with the data provided. This is equally true for the DOMDocument object I use here, however, it is build on top of the pretty stable libxml library (not only used in the PHP world, but in very many other worlds as well) and it also has a recovery property which allows further control.

Answer 2

You should be able to use:

$html->find('*[class*=price]/text()')

I don't like that /text() though because it's not real css.

Also note that you need to leave out the ,0 when iterating with foreach .