Q:

Wordpress simple_html_dom.php admin page

I've made as script using file_get_html. I'm now transfering it to a Wordpress site, and it doesn't seem to work.
Just trying to use it in a admin plugin.
Snippet below:
require('includes/simple_html_dom.php');
if (isset($_POST['submit_updateColors'])) {
        $qGetBrands = $mysqli->query("SELECT ... ");
        while ($rowBrands = $qGetBrands->fetch_assoc()) {

            $brandId = $rowBrands['cl_brand_Id'];
            $url =  "https://www.url.com". $rowBrands['cl_brand_url'];
            $html = file_get_html($url);
            $html->find('div[class=col-md-1p5]');

            foreach($html->find('div[class=col-md-1p5]') as $brandColors) {
                foreach ($brandColors->find('h3') as $brandColor) {
                    $p_brandColor = $brandColor->innertext;
                }

                foreach ($brandColors->find('img') as $ColorImg) {
                    $p_ColorImg = $ColorImg->src;
                }                   
                    echo $p_brandColor ." <br />";
                    echo $imgName['basename'] ." <br /> <br />";
            }
        }
    }

After while have started:
echo "I'm here!!!" 
Results: "I'm here!!!"
After first foreach:
echo "I'm here!!!" 
Results: Nothing
After $html = file_get_html($url);:
echo "Result: ".$html;
Results: Nothing, not even showing "Result"
Error messages:

Fatal error: Uncaught Error: Call to a member function find() on
  boolean in
  /home/xxx/public_html/wp-content/plugins/Farbkarte/index.php:67 Stack
  trace: #0 /home/xxx/public_html/wp-includes/class-wp-hook.php(286):
  main_init('') #1
  /home/xxx/public_html/wp-includes/class-wp-hook.php(310):
  WP_Hook->apply_filters('', Array) #2
  /home/xxx/public_html/wp-includes/plugin.php(453):
  WP_Hook->do_action(Array) #3
  /home/xxx/public_html/wp-admin/admin.php(224):
  do_action('toplevel_page_f...') #4 {main} thrown
  in /home/xxx/public_html/wp-content/plugins/Farbkarte/index.php on
  line 67

I have no idea how to proceed, and would love to get some help!
Outside wordpress, it works perfectly.
I hope I havent removed too much informaton.
Thanks in advance!

A:

I was able to solve this by looking at file_get_contents(): stream does not support seeking ／ When was PHP behavior about this changed?

On line 75 of simple_html_dom.php:
$contents = file_get_contents($url, $use_include_path, $context, $offset);
I removed the reference to $offset:
$contents = file_get_contents($url, $use_include_path, $context);
No my page works fine. Not taking liability for anything else it breaks! :)

