Simple HTML DOM Parser - find class with random number - php

Question

I'm trying to scrap data from one websites. I stuck on ratings.
They have something like this:
<div class="rating-static rating-10 margin-top-none margin-bottom-sm"></div>
<div class="rating-static rating-13 margin-top-none margin-bottom-sm"></div>
<div class="rating-static rating-46 margin-top-none margin-bottom-sm"></div>
Where rating-10 is actually one star, rating-13 two stars in my case, rating-46 will be five stars in my script.
Rating range can be from 0-50.
My plan is to create switch and if I get class range from 1-10 I will know how that is one star, from 11-20 two stars and so on.
Any idea, any help will be appreciated.

Answer 1

Try this
<?php
$data = '<div class="rating-static rating-10 margin-top-none margin-bottom-sm"></div>';
$dom = new DOMDocument;
$dom->loadHTML($data);
$xpath = new DomXpath($dom);
$div = $dom->getElementsByTagName('div')[0];
$div_style = $div->getAttribute('class');
$final_data = explode(" ",$div_style);
echo $final_data[1];
?>
this will give you expected output.

Answer 2

I had an similiar project, this should be the way to do it if you want to parse the whole HTML site
$dom = new DOMDocument();
$dom->loadHTML($html); // The HTML Source of the website
foreach ($dom->getElementsByTagName('div') as $node){
if($node->getAttribute("class") == "rating-static"){
$array = explode(" ", $node->getAttribute("class"));
$ratingArray = explode("-", $array[1]); // $array[1] is rating-10
//$ratingArray[1] would be 10
// do whatever you like with the information
}
}
It could be that you must change the if part to an strpos check, I haven't tested this script, but I think that getAttribute("class") returns all classes. This would be the if statement then
if(strpos($node->getAttribute("class"), "rating-static") !== false)

Answer 3

FYI try using Querypath for future parsing needs. Its just a wrapper around PHP DOM parser and works really really well.