Have done PayPal development come in a moment, thank you!

Have done PayPal development come in, thank you!!!!!
After I submit a payment to PayPal, PayPal will post some information about the transaction to my website.

This data is carried out in the background, and it is said that PayPal's trading status will be post to a specified page every time it is changed

So how do I get these trading routines on this designated page?

After I have acquired this information, I will pass it back to PayPal for verification.

How am I supposed to return it intact?

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The web site he visited will usually come with parameters, depending on the manual. May be $_get or $_post data, you return the information he also has format, roughly similar to the payment interface is you tell him whether you are successful here. Specifically, according to the manual.
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The two parameters of Return_url and Notify_url are more important.

No, you're so in trouble.

The simplest way to pay for it is to submit the necessary data to PayPal and the payment is successful, and PayPal will interact with your server via PHP files specified by both Return_url and Notify_url.
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Pay attention to this issue because I will use it tomorrow.

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