Category: API

Making something new is always challenging.
Google API is well made, but documentation is always confusing me.
So let’s say “Hello” to Google Analytics. It’s good start for this kind of complicate API work.

I have checked this Hello analytics page.

1. Download composer

$ curl -sS https://getcomposer.org/installer | php

2. creat composer.json

{
  "require": {
    "google/apiclient": "^2.0"
  }
}

3. Initialize composer with google analytics. This will create vendor folder with google folder inside

$ php composer.phar install

4. Get credential JSON file from Google credential page.
Go to Credentials > Create credentials > Service account key > Click key type as JSON
Download and save it in to proper folder.

5. Enable Google Analytics API
Go to Library on Google API page. And click Analytics API under Other popular APIs

6. Open Json credential file and copy client email and Add user profile in google analytics ( admin > user management > Add permissions for:)
e.g. some-username@my-api-123456.iam.gserviceaccount.com

7. Write this code and run it from browser.

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require '../composer/vendor/autoload.php';

function initializeAnalytics(){
  // Creates and returns the Analytics Reporting service object.
  // 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.
  $KEY_FILE_LOCATION = __DIR__ . '/credentials.json';

  // Create and configure a new client object.
  $client = new Google_Client();
  $client->setApplicationName("Hello Analytics Reporting");
  $client->setAuthConfig($KEY_FILE_LOCATION);
  $client->setScopes(['https://www.googleapis.com/auth/analytics.readonly']);
  $analytics = new Google_Service_Analytics($client);

  return $analytics;
}

function getFirstProfileId($analytics) {
  // Get the user's first view (profile) ID.

  // Get the list of accounts for the authorized user.
  $accounts = $analytics->management_accounts->listManagementAccounts();

  if (count($accounts->getItems()) > 0) {
    $items = $accounts->getItems();
    $firstAccountId = $items[0]->getId();

    // Get the list of properties for the authorized user.
    $properties = $analytics->management_webproperties
        ->listManagementWebproperties($firstAccountId);

    if (count($properties->getItems()) > 0) {
      $items = $properties->getItems();
      $firstPropertyId = $items[0]->getId();

      // Get the list of views (profiles) for the authorized user.
      $profiles = $analytics->management_profiles
          ->listManagementProfiles($firstAccountId, $firstPropertyId);

      if (count($profiles->getItems()) > 0) {
        $items = $profiles->getItems();

        // Return the first view (profile) ID.
        return $items[0]->getId();

      } else {
        throw new Exception('No views (profiles) found for this user.');
      }
    } else {
      throw new Exception('No properties found for this user.');
    }
  } else {
    throw new Exception('No accounts found for this user.');
  }
}

function getResults($analytics, $profileId) {
  // Calls the Core Reporting API and queries for the number of sessions
  // for the last seven days.
   return $analytics->data_ga->get(
       'ga:' . $profileId,
       '7daysAgo',
       'today',
       'ga:sessions');
}

function printResults($results) {
  // Parses the response from the Core Reporting API and prints
  // the profile name and total sessions.
  if (count($results->getRows()) > 0) {

    // Get the profile name.
    $profileName = $results->getProfileInfo()->getProfileName();

    // Get the entry for the first entry in the first row.
    $rows = $results->getRows();
    $sessions = $rows[0][0];

    // Print the results.
    print "First view (profile) found: $profileName\n";
    print "Total sessions: $sessions\n";
  } else {
    print "No results found.\n";
  }
}

$analytics = initializeAnalytics();
$profile = getFirstProfileId($analytics);
$results = getResults($analytics, $profile);
printResults($results);

This looks easy but it need some effort to make it work.
Once you get Hello from analytics, next step is a lot easier.