PayPal API interface application tutorial
Step 1, openPayPal Developer Platform, click the top right button to log in to PayPal account
https://developer.paypal.com/classic-home
Step 2, select the online official version, and then click the create app button
Step 3, enter your mall name, and then click the create app button to getClient ID andSecret
Step 4, click the create webhook button, enter the IPN, and check all types of notifications. Click the Save button to get theWebhook id