I know this sounds very simple, but when working with PayPal, I first asked this question. I went through a Google search but didn’t get the proper answer, differentiating "PayPal IP address and notifying the return or return URL." Any help with this will be noticeable.
Also, if possible, I need to know what are the advantages and their functional differentiation.
thank
Notify Url: The URL to which PayPal publishes transaction information through instant notification. Must be URL encoded. Its optional field has a maximum of 256 characters in length.
URL- : URL-, ; , URL- " ". : - PayPal. rm GET POST: , URL-, .
IPN - , / .
URL- - script, PayPal . script, , PayPal , .
URL- - URL-, . , script -, - "" " ".
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