php get google analytics data use oauth 2.0

$a = session_id();
if ($a == '') session_start(); 
require_once  ('src'. DIRECTORY_SEPARATOR.'Google_Client.php'); 
require_once ('src'. DIRECTORY_SEPARATOR .'contrib'. DIRECTORY_SEPARATOR .'Google_AnalyticsService.php'); 
require_once 'config.php';
 
	// Build a new client object to work with authorization.
	$client = new Google_Client();
	$client->setClientId(CLIENT_ID);
	$client->setClientSecret(CLIENT_SECRET);
	$client->setRedirectUri(REDIRECT_URL);
	$client->setApplicationName(APP_NAME);
	$client->setScopes(array(ANALYTICS_SCOPE)); 
	// Magic. Returns objects from the Analytics Service
	// instead of associative arrays.
	$client->setUseObjects(true);  
        try{
	   $accessToken = $client->authenticate();
	}
	catch(exception $e)
	{
	 echo $e;
	}
 
	if($accessToken)
	{
		 echo "<b>Your Token is</b><textarea onfocus='this.select()' style='width:500px;height:60px;'>$accessToken</textarea><a href='sample.php'>View Demo</a>";
		$_SESSION['token']  = ($accessToken);
 
	}

$a = session_id();
if ($a == '') session_start(); 
require_once 'config.php';
require_once 'src'. DIRECTORY_SEPARATOR.'Google_Client.php'; 
require_once ('src'. DIRECTORY_SEPARATOR .'contrib'. DIRECTORY_SEPARATOR .'Google_AnalyticsService.php'); 
 
 
$ga_profile_id = '23138610';
 
// Build a new client object to work with authorization.
$client = new Google_Client();
$client->setClientId(CLIENT_ID);
$client->setClientSecret(CLIENT_SECRET);
 
$client->setApplicationName(APP_NAME);
$client->setScopes(array(ANALYTICS_SCOPE));
 
// Magic. Returns objects from the Analytics Service
// instead of associative arrays.
$client->setUseObjects(true); 
 
$accessToken= $_SESSION['token'];
if(empty($accessToken))
{
 header('Location:getGatoken.php');
}
$client->setAccessToken($accessToken);
if($client->isAccessTokenExpired())
{
    $tokenObj = json_decode($accessToken);
	$client->refreshToken($tokenObj->refresh_token);
     $_SESSION['token']=$client->getAccessToken();
} 
 
 
 $analytics = new Google_AnalyticsService($client);
 
 
	 try
	{ 
	  $results=$analytics->data_ga->get(
        'ga:' . $ga_profile_id,
        '2012-01-01',
        '2012-01-31',
        'ga:organicSearches,ga:visits,ga:newVisits,ga:visitors',
        array(
            'dimensions' => 'ga:landingPagePath',
            'sort' => '-ga:organicSearches',
            'filters' => 'ga:medium==organic',
            'max-results' => '25'));
 
			$totals = $results->gettotalsForAllResults();
			$html='';
			foreach ($totals as  $metricName => $metricTotal )
			{
 
 
			  $html .= "Metric Name  = $metricName\n";
			  $html .= "Metric Total = $metricTotal <br />";
 
 
 
			}  ;
			echo $html;
 
		 if (count($results->getRows()) > 0) {
		  $table = '<table>';
 
		  // Print headers.
		  $table .= '<tr>';
 
		  foreach ($results->getColumnHeaders() as $header) {
			$table .= '<th>' . $header->getName() . '</th>';
		  }
		  $table .= '</tr>';
 
		  // Print table rows.
		  foreach ($results->getRows() as $row) {
			$table .= '<tr>';
			  foreach ($row as $cell) {
				$table .= '<td>'
					   . htmlspecialchars($cell, ENT_NOQUOTES)
					   . '</td>';
			  }
			$table .= '</tr>';
		  }
		  $table .= '</table>';
 
		} else {
		  $table = '<p>No results found.</p>';
		}
		 echo    $table;
 
 
	}
	catch(exception $e)
	{
		echo $e; 
	}