How to take screenshot web page by php through Google PageSpeed Insights API

In this article we use the following knowledge

PHP Source Code

<?
$url = 'https://www.googleapis.com/pagespeedonline/v2/runPagespeed?url=https://www.whois.com/&screenshot=true';
echo '<pre>'.$url.'</pre>';
$ch = curl_init();
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
curl_setopt($ch, CURLOPT_HTTPGET, 1 );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_FOLLOWLOCATION , 1 );
curl_setopt($ch, CURLOPT_FOLLOWLOCATION , 1 );
curl_setopt($ch, CURLOPT_URL, $url );
curl_setopt($ch, CURLOPT_REFERER, $ref );
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);     
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
$data = curl_exec($ch);
curl_close($ch);

$result = json_decode($data,true);
$score  = $result['ruleGroups']['SPEED']['score'];
$img    = str_replace('_','/',str_replace('-','+',$result['screenshot']['data']));
echo '<h3>Desktop Friendly Score: </strong>'.$score.'/100</strong></h3>';
echo '<img src = "data:image/jpeg;base64,'.$img.'">';
?>