lipp/ObtainUserConsent.php
<?php require __DIR__ . '/../bootstrap.php'; use PayPal\Api\OpenIdSession; $baseUrl = getBaseUrl() . '/UserConsentRedirect.php?success=true';

The clientId is stored in the bootstrap file

//Get Authorization URL returns the redirect URL that could be used to get user's consent $redirectUrl = OpenIdSession::getAuthorizationUrl( $baseUrl, array('openid', 'profile', 'address', 'email', 'phone', 'https://uri.paypal.com/services/paypalattributes', 'https://uri.paypal.com/services/expresscheckout', 'https://uri.paypal.com/services/invoicing'), null, null, null, $apiContext );

NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY

ResultPrinter::printResult("Generated the User Consent URL", "URL", '<a href="'. $redirectUrl . '" >Click Here to Obtain User Consent</a>', $baseUrl, $redirectUrl);