I'm trying to show a server status on my webpage that is being shown as a SVG object. (for example [http://downdetector.com/status/netflix).
However i can't seem to get it. I got anything from bad request errors to empty objects or empty divs. What i did succeed in however is returning the entire page using cURL, but i fumbled when trying to filter out the rest and only print te SVG.
How can i trick the external server into thinking i'm a browser, and successfully and preferably elegantly retrieve a working SVG object and printing it on my page? I'm still quite new to PHP so any explanation next to the code would be very welcome.
I even tried to use Simple HTML DOM, but i still havent been able to get the desired results.
This is my current code (messy as it still may be) :
<?php
class StatusController {
function __construct() {
//include('assets/simple_html_dom.php');
}
public function getStatus() {
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,"http://downdetector.com/status/netflix");
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
$output=curl_exec($ch);
curl_close($ch);
//print $output;
// $html = str_get_html($output);
// $elem = $html->find('div[id=holder]', 0);
// print $elem;
//
$dom = new DOMDocument();
$dom->loadHTML($output); // Returned $data from CURL request
$xpath = new DOMXPath($dom);
$elements = $xpath->query('*/div'); // Don't know how to fill in this query to find an ID
echo('<pre>'.print_r($elements, true).'</pre>');
var_dump($elements);
}
}
?>
I've been trying lots of options for nearly 3 full days now and i really don't know what to do at this point.
The problem with this URL is, that the SVG is loaded dynamically via JavaScript:
<p>Netflix offers an on-demand streaming video service through the internet as well as a flat rate DVD by mail service. </p>
<img id='tracker' style='display: none' />
<script type='text/javascript'>
// <![CDATA[
url = '//tracker.downdetector.com/count/company/20065.txt?ref=' + encodeURIComponent(document.referrer);
$('#tracker')[0].src = url;
// ]]>
</script>
The script part will be replaced by the SVG. I can't tell you, how to get it in this case.
But if you have a website with normal imbedded SVG elements, you should be able to select them by $elements = $xpath->query("//*[name()='svg']");.