Подсчет Ключ / Значения в JSON [дубликат]

<?php
header("Content-Type: text/plain");

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.linkedin.com/company/technistone-a-s-");

$header = array();
$header[] = "Host: www.linkedin.com";
$header[] = "User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0";
$header[] = "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
$header[] = "Accept-Language: en-US,en;q=0.5";
$header[] = "Accept-Encoding: gzip, deflate, br";
$header[] = "Connection: keep-alive";
$header[] = "Upgrade-Insecure-Requests: 1";

curl_setopt($ch,CURLOPT_ENCODING , "gzip");
curl_setopt($ch, CURLOPT_HTTPHEADER , $header);
$my_var = curl_exec($ch);

echo $my_var;