Zoho v3 PHP SDK POC

<?php
class Record
{
    public static function getRecord()
    {
        /**
         * Configuration variables
         */
        $autoRefreshFields = false; // all the modules' fields will be auto-refreshed in the background, every hour.
        $pickListValidation = false; // validates user input for a pick list field and allows or disallows the addition of a new value to the list.
        $enableSSLVerification = true; // enable or disable curl certificate verification
        $connectionTimeout = 2; // The number of seconds to wait while trying to connect. Use 0 to wait indefinitely.
        $timeout = 2; // The maximum number of seconds to allow cURL functions to execute.
        $resourcePath = realpath(__DIR__) . '/phpsdk-application/'; // Absolute directory path to store user specific files containing module fields information.

        /* Path of the file that will store the OAuth token */
        $token_file_path = realpath(__DIR__) . '/php_sdk_token.txt';

        /* OAuth token persistance */
        $token_store = new FileStore($token_file_path);

        /* Logger for exception, and API feedbacks */
        $log_file_path = realpath(__DIR__) . '/php_sdk_log.log';
        $logger = Logger::getInstance(Levels::INFO, $log_file_path);

        /* Instance of UserSignature that identifies the current user */
        $user = new UserSignature('MY ACCOUNT EMAIL');

        /* Configures API environment which decides the domain and the URL to make API calls. */
        $environment = USDataCenter::PRODUCTION();

        /* Creates an instance of OAuthToken using the information got after registering your Zoho client */
        $token = new OAuthToken("MY CLIENT ID", "MY CLIENT SECRET", "MY GRANT TOKEN FROM ZOHO SELF CLIENT", TokenType::REFRESH, "http://localhost/poc-zoho/");

        /* Instance of SDKConfig containing SDK configurations */
        $sdkConfig = (new SDKConfigBuilder())
            ->setAutoRefreshFields($autoRefreshFields)
            ->setPickListValidation($pickListValidation)
            ->setSSLVerification($enableSSLVerification)
            ->connectionTimeout($connectionTimeout)
            ->timeout($timeout)
            ->build();

        /* (useless ?) Instance of RequestProxy containing the proxy properties of the user. */
        // $requestProxy = new RequestProxy("proxyHost", "proxyPort", "proxyUser", "password");

        Initializer::initialize($user, $environment, $token, $token_store, $sdkConfig, $resourcePath, $logger);

        /**
         * Things getting serious here
         */
        try {
            /* Output instance */
            $recordOperations = new RecordOperations();

            /* Parameters instance */
            $paramInstance = new ParameterMap();
            $paramInstance->add(GetRecordsParam::approved(), "both");

            /* ? Request headers */
            $headerInstance = new HeaderMap();

            /* ??? Get only records modified since a given date ???? */
            $ifmodifiedsince = date_create("2020-06-02T11:03:06+05:30")->setTimezone(new \DateTimeZone(date_default_timezone_get()));
            $headerInstance->add(GetRecordsHeader::IfModifiedSince(), $ifmodifiedsince);

            /* Module name is available here : https://crm.zoho.com/crm/orgXXXXX/settings/modules */
            $moduleAPIName = "Contacts";

            /* Query and its response */
            $response = $recordOperations->getRecords($moduleAPIName, $paramInstance, $headerInstance); // Call getRecord method that takes paramInstance, moduleAPIName as parameter

        } catch (\Exception $e) {
            print_r($e);
        }

    }
}