After the WeChat official account is successfully paid, what should I return to the interface for notification of successful payment?

If you keep accessing the configured policy_url, what should I return to stop it? I tried echo & #039; SUCCESS & #039; but no. I can stop returning the result when I use the QR code to pay, but it seems that I cannot pay in the public account, you have also tried echo & #039; & amp; lt; xml & amp; gt; & amp; lt; return_code & amp; gt; & amp; l... if you keep accessing the configured policy_url, what should I return to stop it?
Tried echo 'SUCCESS';But I can't. When I use the scan code to pay, the returned result can be stopped, but the payment in the public account does not seem to work, and I have tried to directly
echo ' SUCCESS OK '；
Or not ...... How should I return it? Guidance ......

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If you keep accessing the configured policy_url, what should I return to stop it?
Triedecho 'SUCCESS';But I can't. When I use the scan code to pay, the returned result can be stopped, but the payment in the public account does not seem to work, and I have tried to directly
echo ' SUCCESS OK '；
Or not ...... How should I return it? Guidance ......

The correct answer is:echo 'SUCCESS';My own mistake ...... I want someone to see it later.

If you need to read the payment documentation clearly, the documentation clearly states that in order to ensure the successful delivery of the message to the developer, it will call the notify address multiple times. This requires your developers to handle this problem. You can modify the payment status once and you need to judge it once at notify.