/**
 * Instantiate new class and push data
 * @param  string $UA     The UA string of the GA account to use
 * @param  string $domain domain
 * @param  string $page   the page to set the pageview
 * @return null         
 */
function ssga_track($UA = null, $domain = null, $page = null)
{
    $ssga = new ssga($UA, $domain);
    $ssga->set_page($page);
    $ssga->send();
    $ssga->reset();
    return $ssga;
}
<?php

// 設定
define('GA_ACCOUNT', 'UA-51246207-2');
define('GA_HOST', 'shotawatanabe.com');
//ライブラリ
include 'server-side-google-analytics/ss-ga.class.php';
// pageは必須
if (empty($_GET['page'])) {
    die("ERROR");
}
// Create ssga instance
$ssga = new ssga(GA_ACCOUNT, GA_HOST);
// Set a pageview
$ssga->set_page($_GET['page']);
$ssga->set_page_title($_GET['title']);
// Set Event
$ssga->set_event('ContentBlocker', 'Fire', '', '');
// Send
$ssga->send();
$ssga->reset();