Oauth example for PHP and the Google Analytics reporting api v4 with pagination.

Google Analytics PHP Sample ReadME

For service account auth include:

	require_once __DIR__ . '/ServiceAccount.php';

For Oauth2 include:

	require_once __DIR__ . '/Oauth2Authentication.php';

Note: To reset the auth for oauth to just unset the sessions

	unset($_SESSION['access_token']);
	unset($_SESSION['refresh_token']);

oauth2Authencation.php

<?php
// Copyright 2017 DAIMTO ([Linda Lawton](https://twitter.com/LindaLawtonDK)) :  [www.daimto.com](http://www.daimto.com/)
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by DAIMTO-Google-apis-Sample-generator 1.0.0
//     Template File Name:  Oauth2Authentication.tt
//     Build date: 08/30/2017 13:16:22
//     PHP generator version: 1.0.0
//     
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------  
// About 
// 
// Unofficial sample for the Drive v3 API for PHP. 
// This sample is designed to be used with the Google PHP client library. (https://github.com/google/google-api-php-client)
// 
// API Description: Manages files in Drive including uploading, downloading, searching, detecting changes, and updating sharing permissions.
// API Documentation Link https://developers.google.com/drive/
//
// Discovery Doc  https://www.googleapis.com/discovery/v1/apis/Drive/v3/rest
//
//------------------------------------------------------------------------------
// Installation
//
// The preferred method is via https://getcomposer.org. Follow the installation instructions https://getcomposer.org/doc/00-intro.md 
// if you do not already have composer installed.
//
// Once composer is installed, execute the following command in your project root to install this library:
//
// composer require google/apiclient:^2.0
//
//------------------------------------------------------------------------------  
// Load the Google API PHP Client Library.
require_once __DIR__ . '/vendor/autoload.php';
/**
 * Gets the Google client refreshing auth if needed.
 * Documentation: https://developers.google.com/identity/protocols/OAuth2
 * Initializes a client object.
 * @return A google client object.
 */
function getGoogleClient() {
	$client = getOauth2Client();

	// Refresh the token if it's expired.
	if ($client->isAccessTokenExpired()) {
		$client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());
		file_put_contents($credentialsPath, json_encode($client->getAccessToken()));
	}
return $client;
}

/**
 * Builds the Google client object.
 * Documentation: https://developers.google.com/identity/protocols/OAuth2
 * Scopes will need to be changed depending upon the API's being accessed.
 * @return A google client object.
 */
function buildClient(){
	
	$client = new Google_Client();
	$client->setAccessType("offline");        // offline access.  Will result in a refresh token
	$client->setIncludeGrantedScopes(true);   // incremental auth
	$client->setAuthConfig(__DIR__ . '/client_secrets.json');
	$client->addScope(array(Google_Service_Analytics::ANALYTICS_READONLY, Google_Service_Analytics::ANALYTICS));
	$client->setRedirectUri(getRedirectUri());
	//$client->setRedirectUri((isset($_SERVER['HTTPS']) ? "https" : "http") . '://' . $_SERVER['HTTP_HOST'] . $folder. '/oauth2callback.php');	
	return $client;
}

/**
 * Builds the redirect uri.
 * Documentation: https://developers.google.com/api-client-library/python/auth/installed-app#choosingredirecturi
 * Hostname and current server path are needed to redirect to oauth2callback.php
 * @return A redirect uri.
 */
function getRedirectUri(){

	//Building Redirect URI
	$url = $_SERVER['REQUEST_URI'];                    //returns the current URL
	if(strrpos($url, '?') > 0)
		$url = substr($url, 0, strrpos($url, '?') );  // Removing any parameters.
	$folder = substr($url, 0, strrpos($url, '/') );   // Removeing current file.
	return (isset($_SERVER['HTTPS']) ? "https" : "http") . '://' . $_SERVER['HTTP_HOST'] . $folder. '/oauth2callback.php';
}


/**
 * Authenticating to Google using Oauth2
 * Documentation:  https://developers.google.com/identity/protocols/OAuth2
 * Returns a Google client with refresh token and access tokens set. 
 *  If not authencated then we will redirect to request authencation.
 * @return A google client object.
 */
function getOauth2Client() {
	try {
		
		$client = buildClient();
        
		// Set the refresh token on the client.	
		if (isset($_SESSION['refresh_token']) && $_SESSION['refresh_token']) {
			$client->refreshToken($_SESSION['refresh_token']);
		}
		
		// If the user has already authorized this app then get an access token
		// else redirect to ask the user to authorize access to Google Analytics.
		if (isset($_SESSION['access_token']) && $_SESSION['access_token']) {
			
			// Set the access token on the client.
			$client->setAccessToken($_SESSION['access_token']);					
			
			// Refresh the access token if it's expired.
			if ($client->isAccessTokenExpired()) {				
				$client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());
				$client->setAccessToken($client->getAccessToken());	
				$_SESSION['access_token'] = $client->getAccessToken();				
			}			
			return $client;	
		} else {
			// We do not have access request access.
			header('Location: ' . filter_var( $client->getRedirectUri(), FILTER_SANITIZE_URL));
		}
	} catch (Exception $e) {
		print "An error occurred: " . $e->getMessage();
	}
}
?>

oauth2callback.php

<?php
// Copyright 2017 DAIMTO ([Linda Lawton](https://twitter.com/LindaLawtonDK)) :  [www.daimto.com](http://www.daimto.com/)
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by DAIMTO-Google-apis-Sample-generator 1.0.0
//     Template File Name:  ServiceAccount.tt
//     Build date: 08/30/2017 13:16:24
//     PHP generator version: 1.0.0
//     
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------  
// About 
// 
// Unofficial sample for the Drive v3 API for PHP. 
// This sample is designed to be used with the Google PHP client library. (https://github.com/google/google-api-php-client)
// 
// API Description: Manages files in Drive including uploading, downloading, searching, detecting changes, and updating sharing permissions.
// API Documentation Link https://developers.google.com/drive/
//
// Discovery Doc  https://www.googleapis.com/discovery/v1/apis/Drive/v3/rest
//
//------------------------------------------------------------------------------
// Installation
//
// The preferred method is via https://getcomposer.org. Follow the installation instructions https://getcomposer.org/doc/00-intro.md 
// if you do not already have composer installed.
//
// Once composer is installed, execute the following command in your project root to install this library:
//
// composer require google/apiclient:^2.0
//
//------------------------------------------------------------------------------  
// Load the Google API PHP Client Library.
require_once __DIR__ . '/vendor/autoload.php';
require_once __DIR__ . '/Oauth2Authentication.php';

// Start a session to persist credentials.
session_start();

// Handle authorization flow from the server.
if (! isset($_GET['code'])) {
	$client = buildClient();
	$auth_url = $client->createAuthUrl();
	header('Location: ' . filter_var($auth_url, FILTER_SANITIZE_URL));
} else {
	$client = buildClient();
	$client->authenticate($_GET['code']); // Exchange the authencation code for a refresh token and access token.
	// Add access token and refresh token to seession.
	$_SESSION['access_token'] = $client->getAccessToken();
	$_SESSION['refresh_token'] = $client->getRefreshToken();	
	//Redirect back to main script
	$redirect_uri = str_replace("oauth2callback.php",$_SESSION['mainScript'],$client->getRedirectUri()); 	
	header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}

?>

ReportsSample.php

<?php
// Copyright 2017 DAIMTO ([Linda Lawton](https://twitter.com/LindaLawtonDK)) :  [www.daimto.com](http://www.daimto.com/)
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by DAIMTO-Google-apis-Sample-generator 1.0.0
//     Template File Name:  methodTemplate.tt
//     Build date: 08/30/2017 13:16:07
//     PHP generator version: 1.0.0
//     
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------  
// About 
// 
// Unofficial sample for the Analyticsreporting v4 API for PHP. 
// This sample is designed to be used with the Google PHP client library. (https://github.com/google/google-api-php-client)
// 
// API Description: Accesses Analytics report data.
// API Documentation Link https://developers.google.com/analytics/devguides/reporting/core/v4/
//
// Discovery Doc  https://www.googleapis.com/discovery/v1/apis/Analyticsreporting/v4/rest
//
//------------------------------------------------------------------------------
// Installation
//
// The preferred method is via https://getcomposer.org. Follow the installation instructions https://getcomposer.org/doc/00-intro.md 
// if you do not already have composer installed.
//
// Once composer is installed, execute the following command in your project root to install this library:
//
// composer require google/apiclient:^2.0
//
//------------------------------------------------------------------------------  


// Load the Google API PHP Client Library.
require_once __DIR__ . '/vendor/autoload.php';
//require_once __DIR__ . '/ServiceAccount.php';
require_once __DIR__ . '/Oauth2Authentication.php';
session_start();
//unset($_SESSION['access_token']);
//unset($_SESSION['refresh_token']);
$_SESSION['mainScript'] = basename($_SERVER['PHP_SELF']);   // Oauth2callback.php will return here.

$client = getGoogleClient();
$service = new Google_Service_AnalyticsReporting($client); 

// Create the DateRange object.
$dateRange = new Google_Service_AnalyticsReporting_DateRange();
$dateRange->setStartDate("2016-01-01");
$dateRange->setEndDate("2017-06-30");

// Create the Metrics objects.
$sessions = new Google_Service_AnalyticsReporting_Metric();
$sessions->setExpression("ga:sessions");
$sessions->setAlias("ga:sessions");
$users = new Google_Service_AnalyticsReporting_Metric();
$users->setExpression("ga:users");
$users->setAlias("ga:users");
$metrics = array($sessions,$users);

// Create the Dimensions objects.
$date = new Google_Service_AnalyticsReporting_Dimension();
$date->setName("ga:date");
$pagePath = new Google_Service_AnalyticsReporting_Dimension();
$pagePath->setName("ga:pagePath");
$dimensions = array($date,$pagePath);

// Create the ReportRequest object.
$request = new Google_Service_AnalyticsReporting_ReportRequest();
$request->setViewId("81692014");
$request->setPageSize("10000");
$request->setDateRanges($dateRange);
$request->setDimensions($dimensions);
$request->setMetrics($metrics);

// Create the report
$body = new Google_Service_AnalyticsReporting_GetReportsRequest();
$body->setReportRequests(array( $request));

$data =  BatchGet($service, $body);
showData($data->reports[0]);

// Loop though first give pages of data. 
$cnt = 0;   
while ($data->reports[0]->nextPageToken > 0 && $cnt < 5) {

	// There are more rows for this report. we apply the next page token to the page token of the orignal body.
	$body->reportRequests[0]->setPageToken($data->reports[0]->nextPageToken);
	$data = BatchGet($service, $body);
	showData($data->reports[0]);
	$cnt++;
	}

function showData($data)  {
	?> <pre><table><?php

	?><tr><?php // Header start row
	for($i = 0; $i < sizeof($data->columnHeader->dimensions);$i++)	{
		?> <td> <?php print_r($data->columnHeader->dimensions[$i]); ?> </td> <?php
	}
	for($i = 0; $i < sizeof($data->columnHeader->metricHeader->metricHeaderEntries);$i++)	{
		?> <td> <?php print_r($data->columnHeader->metricHeader->metricHeaderEntries[$i]->name); ?> </td> <?php
	}
	?><tr><?php  // Header row end
	
	// Display data
	for($i = 0; $i < sizeof($data->data->rows);$i++)	{

		?><tr><?php // Data row start
		// Dimensions
		for($d = 0; $d < sizeof($data->columnHeader->dimensions);$d++)	{
			?> <td> <?php print_r($data->data->rows[$i]->dimensions[$d]); ?> </td> <?php
		}
		// Metrics
		for($m = 0; $m < sizeof($data->columnHeader->metricHeader->metricHeaderEntries);$m++)	{
			?> <td> <?php print_r($data->data->rows[$i]->metrics[0]->values[$m]); ?> </td> <?php
		}
		?><tr><?php  // Header row end
	}
	?></table></pre><?php
}
function showText($data)
{
 ?> <pre> <?php print_r($data); ?> </pre> <?php
}

/**
* Returns the Analytics data. 
* Documentation https://developers.google.com/analyticsreporting/v4/reference/reports/batchGet
* Generation Note: This does not always build corectly.  Google needs to standardise things I need to figuer out which ones are wrong.
* @service Authenticated Analyticsreporting service.</param>  
* @body A valid Analyticsreporting v4 body.</param>
* @return GetReportsResponseResponse</returns>
*/
function BatchGet($service, $body)
{
	try
	{
		// Initial validation.
		if ($service == null)
			throw new Exception("service");
		if ($body == null)
			throw new Exception("body");

		// Make the request.
		return $service->reports->batchGet($body);
	}
	catch (Exception $ex)
	{
		throw new Exception("Request Reports.BatchGet failed.", $ex->getMessage());
	}
}
?>

serviceAccount.php

<?php
// Copyright 2017 DAIMTO ([Linda Lawton](https://twitter.com/LindaLawtonDK)) :  [www.daimto.com](http://www.daimto.com/)
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by DAIMTO-Google-apis-Sample-generator 1.0.0
//     Template File Name:  ServiceAccount.tt
//     Build date: 08/30/2017 13:16:26
//     PHP generator version: 1.0.0
//     
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------  
// About 
// 
// Unofficial sample for the Analyticsreporting v4 API for PHP. 
// This sample is designed to be used with the Google PHP client library. (https://github.com/google/google-api-php-client)
// 
// API Description: Accesses Analytics report data.
// API Documentation Link https://developers.google.com/analytics/devguides/reporting/core/v4/
//
// Discovery Doc  https://www.googleapis.com/discovery/v1/apis/Analyticsreporting/v4/rest
//
//------------------------------------------------------------------------------
// Installation
//
// The preferred method is via https://getcomposer.org. Follow the installation instructions https://getcomposer.org/doc/00-intro.md 
// if you do not already have composer installed.
//
// Once composer is installed, execute the following command in your project root to install this library:
//
// composer require google/apiclient:^2.0
//
//------------------------------------------------------------------------------  
// Load the Google API PHP Client Library.
require_once __DIR__ . '/vendor/autoload.php';

// Use the developers console and download your service account
// credentials in JSON format. Place them in this directory or
// change the key file location if necessary.
putenv('GOOGLE_APPLICATION_CREDENTIALS='.__DIR__.'/service-account.json');
$service = getAuthenticateServiceAccount();


/**
 * Authenticating to Google using a Service account
 * Documentation: https://developers.google.com/api-client-library/php/auth/service-accounts
 * Initializes an Analyticsreporting.v4 service object.
 *
 * @return An authorized Analyticsreporting.v4 service object.
 */
function getAuthenticateServiceAccount() {
	try {	

		// Create and configure a new client object.		
		$client = new Google_Client();
		$client->useApplicationDefaultCredentials();
		$client->addScope(Google_Service_Analytics::ANALYTICS);
		return new Google_Service_AnalyticsReporting($client);
	} catch (Exception $e) {
		print "An error occurred: " . $e->getMessage();
	}
}
?>