Laravel Undefined Property Error with Google Pagespeed API - php

Question

I'm a beginner in using laravel. For my webapp I want to use the Google API PageSpeed. When visiting /pagespeed, it gives me this error: ErrorException (E_NOTICE)
Undefined property: stdClass::$ruleScore
Also I'm not sure if i made a correct return. I just want to show the meassured data on the /pagespeed page.
Couldn't really find an answer for my problem, I hope you can help.
I used the pagespeed.php code from https://gist.github.com/typhonius/6259822/revisions and put this in my PagespeedController:
public function pageSpeed(){
$url = 'https://www.facebook.com';
$key = 'my API key';
// View https://developers.google.com/speed/docs/insights/v1/getting_started#before_starting to get a key
$data = json_decode(file_get_contents("https://www.googleapis.com/pagespeedonline/v1/runPagespeed?url=$url&key=$key"));
$dat = $data->formattedResults->ruleResults;
foreach($dat as $d) {
$name = $d->localizedRuleName;
$score = $d->ruleScore;
print "\nTest: " . $name . "\n";
print "Score: " . $score . "\n";
if ($score != 100) {
if (isset($d->urlBlocks[0]->header->args)) {
$advice_header = replace_placeholders($d->urlBlocks[0]->header->format, $d->urlBlocks[0]->header->args);
}
else {
$advice_header = $d->urlBlocks[0]->header->format;
}
print "Advice: " . $advice_header . "\n";
foreach ($d->urlBlocks[0]->urls as $url) {
$advice = replace_placeholders($url->result->format, $url->result->args);
print $advice . "\n";
}
}
};
function replace_placeholders($format, $args) {
$i = 1;
foreach ($args as $arg) {
$format = str_replace("\$" . $i, "$arg->value", $format);
$i++;
}
return view('pagespeed')->with('format');
}
This is in my views folder: pagespeed.blade.php:
#extends('layouts.app')
#section('content')
<h1>Page Speed</h1>
#endsection
This is my Route in web.php:
Route::get('/pagespeed', 'PagespeedController#pageSpeed');

Answer 1

Change this
$score = $d->ruleScore;
to
$score = $d->score;