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Questions about the paypal interface using php

Source: Internet
Author: User
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Why is the returned value of the paypal interface problem made in php always INVALID! Who sent me a copy of the php paypal interface? thank you! QQ: 870672795 ------ solution ------------------ a lot of official website, www. paypal-biz.comdeveloper with detailed documentation ------ solution ----------- using php paypal interface problems
Why is the returned value always INVALID! Who sent me a copy of the php paypal interface? thank you!
QQ: 870672795

------ Solution --------------------
There are a lot of official websites, there are detailed documents on the https://www.paypal-biz.com/developer/
------ Solution --------------------
Https://www.paypal-biz.com/developer just do this ~~

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