gistfile1.php

<?php
class GAN {   
  function __construct($id) {
   	$this->id = $id;
  }
 
 protected function gaParseCookie() {
    if (isset($_COOKIE['_ga'])) {
	    list($version,$domainDepth, $cid1, $cid2) = preg_split('[\.]', $_COOKIE["_ga"],4);
	    $contents = array('version' => $version, 'domainDepth' => $domainDepth, 'cid' => $cid1.'.'.$cid2);
	    $cid = $contents['cid'];
	  }
	  else if(isset($_REQUEST['uuid'])) {
  	  $cid = $_REQUEST['uuid'];
	  }
	  else $cid = $this->gaGenUUID();
	  return $cid;
	}

	// Generate UUID v4 function - needed to generate a CID when one isn't available
  protected function gaGenUUID() {
    return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
      // 32 bits for "time_low"
      mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),
  
      // 16 bits for "time_mid"
      mt_rand( 0, 0xffff ),
  
      // 16 bits for "time_hi_and_version",
      // four most significant bits holds version number 4
      mt_rand( 0, 0x0fff ) | 0x4000,
  
      // 16 bits, 8 bits for "clk_seq_hi_res",
      // 8 bits for "clk_seq_low",
      // two most significant bits holds zero and one for variant DCE1.1
      mt_rand( 0, 0x3fff ) | 0x8000,
  
      // 48 bits for "node"
      mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )
    );
  }

	// See https://developers.google.com/analytics/devguides/collection/protocol/v1/devguide
	protected function gaFireHit( $data = null, $campaign = null, $uid = null ) {
	  // Standard params
	  $data['v'] = 1;
	  $data['tid'] = $this->id; // Put your own Analytics ID in here
	  $data['cid'] = $this->gaParseCookie();
	  
	  if($uid) {
  	  $data['uid'] = $uid;
	  }
	  
	  if($campaign) {
  	  if($campaign['campaign']) {
    	  $data['cn'] = $campaign['campaign'];
  	  }
  	  if($campaign['name']) {
    	  $data['cn'] = $campaign['name'];
  	  }
  	  if($campaign['source']) {
    	  $data['cs'] = $campaign['source'];
  	  }
  	  if($campaign['medium']) {
    	  $data['cm'] = $campaign['medium'];
  	  }
  	  if($campaign['keyword']) {
    	  $data['ck'] = $campaign['keyword'];
  	  }
  	  if($campaign['content']) {
    	  $data['cc'] = $campaign['content'];
  	  }
  	  if($campaign['id']) {
    	  $data['ci'] = $campaign['id'];
  	  }
	  }

    $getString = 'http://www.google-analytics.com/collect';
    $getString .= '?payload_data&';
    $getString .=  http_build_query($data);
    
    $ch = curl_init();

    // set url
    curl_setopt($ch, CURLOPT_URL, $getString);

    //return the transfer as a string
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    // $output contains the output string
    $result = curl_exec($ch);

    // close curl resource to free up system resources
    curl_close($ch); 

    return $result;
	}

	//
	// PAGEVIEW
	//
	public function pageview($params, $campaign=null, $uid = null) {
    return $this->gaFireHit(array(
      't' => 'pageview',
      'dt' => isset($params['title']) ? $params['title'] : "",
      'dp' => $params['page']
    ), $campaign, $uid);
	}

	//
	// EVENT
	//
	public function event($params, $campaign=null, $uid = null) {
    return $this->gaFireHit(array(
      't' => 'event',
      'ec' => $params['category'],
      'ea' => $params['action'],
      'el' => isset($params['label']) ? $params['label'] : "",
      'ev' => isset($params['value']) ? $params['value'] : ""
    ), $campaign, $uid);
	}

	//
	// TIMING
	//
	public function timing($params, $campaign=null, $uid = null) {
    return $this->gaFireHit(array(
      't' => 'timing',
      'utc' => $params['category'],
      'utl' => isset($params['label']) ? $params['label'] : "",
      'utt' => isset($params['time']) ? $params['time'] : 0,
      'utv' => isset($params['variable']) ? $params['variable'] : ""
    ), $campaign, $uid);
	}

	//
	// TRANSACTION
	//
	public function transaction($params, $campaign=null, $uid = null) {
    return $this->gaFireHit(array(
      't' => 'transaction',
      'ti' => $params['transactionID'],
      'ta' => isset($params['affiliation']) ? $params['affiliation'] : "",
      'tr' => isset($params['revenue']) ? $params['revenue'] : 0,
      'cu' => isset($params['currency']) ? $params['currency'] : "USD"
    ), $campaign, $uid);
	}
 
	//
	// ECOMMERCE
	//
	public function ecommerce() {
	  // Set up Transaction params
    $ti = uniqid(); // Transaction ID
    $ta = 'SI';
    $tr = $info['price']; // transaction value (native currency)
    $cu = $info['cc']; // currency code

    // Send Transaction hit
    $data = array(
      't' => 'transaction',
      'ti' => $ti,
      'ta' => $ta,
      'tr' => $tr,
      'cu' => $cu
    );
    $this->gaFireHit($data);

    // Set up Item params
    $in = urlencode($info['info']->product_name); // item name;
    $ip = $tr;
    $iq = 1;
    $ic = urlencode($info['info']->product_id); // item SKU
    $iv = urlencode('SI'); // Product Category - we use 'SI' in all cases, you may not want to

    // Send Item hit
    $data = array(
      't' => 'item',
      'ti' => $ti,
      'in' => $in,
      'ip' => $ip,
      'iq' => $iq,
      'ic' => $ic,
      'iv' => $iv,
      'cu' => $cu
    );
    return $this->gaFireHit($data);
	}
}
?>