Extracting HTML fields through XPath - php

Question

I have this query which extracts the posts which has been "liked" more than 5 times.
//div[#class="pin"]
[.//span[#class = "LikesCount"]
[substring-before(normalize-space(text())," ") > 5]
I'd like to extract and store additional informations like titles,img url,like number,repin number,...
How to extract them all ?
Multiple XPath queries?
Digging into the nodes of the resulted posts while iterating with php and php functions?
...
Follows a Markup example:
<div class="pin">
<p class="description">gorgeous couch #modern</p>
[...]
<div class="PinHolder">
<a href="/pin/56787645270909880/" class="PinImage ImgLink">
<img src="http://media-cache-ec3.pinterest.com/upload/56787645270909880_d7AaHYHA_b.jpg"
alt="Krizia"
data-componenttype="MODAL_PIN"
class="PinImageImg"
style="height: 288px;">
</a>
</div>
<p class="stats colorless">
<span class="LikesCount">
22 likes
</span>
<span class="RepinsCount">
6 repins
</span>
</p>
[...]
</div>

Answer 1

As you are already using XPath in your code I would suggest to extract that information using XPath too. Here comes an example on how to extract the description.
<?php
// will store the posts as assoc arrays
$mostLikedPostsArr = array();
// call your fictional load function
$doc = load_html('whatever');
// create a XPath selector
$selector = new DOMXPath($doc);
// this your query from above
$query = '//div[#class="pin"][.//span[#class = "LikesCount"][substring-before(normalize-space(text())," ") > 5]';
// getting the most liked posts
$mostLikedPosts = $selector->query($query);
// now iterate through the post nodes
foreach($mostLikedPosts as $post) {
// assoc array for a post
$postArr = array();
// you can do 'relative' queries once having a reference to $post
// note $post as the second parameter to $selector->query()
// lets extract the description for example
$result = $selector->query('p[#class = "description"]', $post);
// just using nodeValue might be ok for text only nodes.
// to properly flatten the <a> tags inside the descriptions
// it will take further attention.
$postArr['description'] = $result->item(0)->nodeValue;
// ...
$mostLikedPostsArr []= $postArr;
}