Google AdWords get ClientCustomerId

php

<?php

namespace App\Libraries;

use Google\AdsApi\AdWords\AdWordsServices;
use Google\AdsApi\AdWords\AdWordsSession;
use Google\AdsApi\AdWords\AdWordsSessionBuilder;
use Google\AdsApi\AdWords\Reporting\v201710\DownloadFormat;
use Google\AdsApi\AdWords\Reporting\v201710\ReportDefinition;
use Google\AdsApi\AdWords\Reporting\v201710\ReportDefinitionDateRangeType;
use Google\AdsApi\AdWords\Reporting\v201710\ReportDownloader;
use Google\AdsApi\AdWords\ReportSettingsBuilder;
use Google\AdsApi\AdWords\v201710\cm\Predicate;
use Google\AdsApi\AdWords\v201710\cm\PredicateOperator;
use Google\AdsApi\AdWords\v201710\cm\ReportDefinitionReportType;
use Google\AdsApi\AdWords\v201710\cm\Selector;
use Google\AdsApi\Common\OAuth2TokenBuilder;

use Google\AdsApi\AdWords\v201710\mcm\CustomerService;


class GoogleService
{

    var $refresh_token;
    var $debug;

    public function __construct($token)
    {
        $this->refresh_token = $token;
        $this->debug = true;
    } 

    private function main($all)
    {
        
        // Generate a refreshable OAuth2 credential for authentication.
        $oAuth2Credential = (new OAuth2TokenBuilder())
            //->fromFile()
            ->withClientId('.apps.googleusercontent.com')
            ->withClientSecret('')
            ->withRefreshToken($this->refresh_token)
            ->build();      

        // See: AdWordsSessionBuilder for setting a client customer ID that is
        // different from that specified in your adsapi_php.ini file.
        // Construct an API session configured from a properties file and the OAuth2
        // credentials above.
       
        $session = (new AdWordsSessionBuilder())
            ->withDeveloperToken('')
            ->withOAuth2Credential($oAuth2Credential)
            ->build();

        $adWordsServices = new AdWordsServices();
        $customerService = $adWordsServices->get($session, CustomerService::class);

        $cliendData = $customerService->getCustomers();
        
        $clientCustomerId = $cliendData[0]->getCustomerId();
        
        $session = (new AdWordsSessionBuilder())
            ->withDeveloperToken('')
            ->withClientCustomerId($clientCustomerId)
            ->withOAuth2Credential($oAuth2Credential)
            ->build();


        $selector = new Selector();

        $selector->setFields(['CustomerId', 'Name', 'CanManageClients', 'TestAccount']);
        $selector->setOrdering([new OrderBy('CustomerId', SortOrder::ASCENDING)]);
        $selector->setPaging(new Paging(0, self::PAGE_LIMIT));

        $managedCustomerService = $adWordsServices->get($session, ManagedCustomerService::class);

        $customers = $managedCustomerService->get($selector);

        var_dump($customers);
        
        
    }

}