Ecommerce

<?php
$ga = 'GA1.2.1969130287.1593675284';
$payment_id = 462;
$amount = "12.00";
$amount = str_replace(",",".", $amount);

$fields = [
    'v'     =>  1,
    't'     =>  'transaction',
    'tid'   =>  'UA-XXXXXXXXX-4',
    'cid'   =>  $ga,
    'ti'    =>  $payment_id,
    'ta'    =>  'cbilling',
    'tr'    =>  $amount,
    'cu'    =>  'RUB'
];

$url = 'https://www.google-analytics.com/collect';
$content = http_build_query($fields);
$content = utf8_encode($content);

$ch = curl_init();
curl_setopt($ch,CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_HTTPHEADER,array('Content-type: application/x-www-form-urlencoded'));
curl_setopt($ch,CURLOPT_HTTP_VERSION,CURL_HTTP_VERSION_1_1);
curl_setopt($ch,CURLOPT_POST, TRUE);
curl_setopt($ch,CURLOPT_POSTFIELDS, $content);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_exec($ch);
curl_close($ch);