Авторизация на удаленном сайте

//parse form_key
$loginurl = 'https://www.g2a.com/toolbar/toolbar?isAjax=ajax';
$cookie_jar = tempnam("tmp", "g2a");
 
curl_setopt($ch, CURLOPT_URL, $loginurl);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
curl_setopt($ch, CURLOPT_COOKIEFILE,$cookie_jar);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
 
$result = curl_exec($ch);
$redir = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
curl_close($ch);
 
$regex3 = '/form_key\"{1}:(.*)\"{1}/';
$text3 = $result;
preg_match($regex3, $text3, $matches3);
$form_key= ltrim ($matches3[1],'"');
 
 
//login in site
 
$fields = array('email' => urlencode('dan-ver@ukr.net'), 'password' => urlencode('78955123'),'form_key'=>urlencode($form_key));
 
$fields_string = "";
foreach ($fields as $key => $value) {
    $fields_string .= $key . '=' . $value . '&';
}
rtrim($fields_string, '&');
 
 
$loginurl = 'https://www.g2a.com/shop/customer/login';
$ch = curl_init();
 
curl_setopt($ch, CURLOPT_URL, $loginurl);
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$result = curl_exec($ch);
$redir = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
curl_close($ch);
 
echo $result;