What is PayPal Returned Data in php

#PayPal Return data after payment Array ( [mc_gross] => 200.00 [protection_eligibility] => Ineligible [payer_id] => QYHMSXDS1G9EW [tax] => 0.00 [payment_date] => 23:58:50 Dec 06, 2016 PST [payment_status] => Completed [charset] => windows-1252 [first_name] => Michael [mc_fee] => 638.30 [notify_version] => 3.8 [custom] => [payer_status] => verified [business] => [email protected] [quantity] => 1 [payer_email] => [email protected]Read moreWhat is PayPal Returned Data in php