Handling hub.secret with PHP

Since the hub.secret value is returned, all that remains is to check for equality.

I saw this url.

$hash = ‘sha256=’ . hash_hmac(‘sha256’, $data, $mySecret);

I want to know in detail what to put in $data and $mySecret.

$mySecret is the secret you used when you created the subscription.


aka hub.secret

And $data is $data = file_get_contents("php://input"); as shown in the post you linked.

I’m really sorry. I tried the potential I could but did not solve it.

What does file_get_contents (“php: // input”); represent?

file_get_contents (hub.callback);?
file_get_contents (hub.topic);?

I don’t understand (“php: // input”).


php://input is a read-only stream that allows you to read raw data from the request body. In the case of POST requests, it is preferable to use php://input instead of $HTTP_RAW_POST_DATA as it does not depend on special php.ini directives. Moreover, for those cases where $HTTP_RAW_POST_DATA is not populated by default, it is a potentially less memory intensive alternative to activating always_populate_raw_post_data. php://input is not available with enctype=“multipart/form-data” .

The line file_get_contents("php://input"); loads data in that was passed to the program thats not presented as $_GET or $_POST data but in the BODY of the request into PHP (for example)

I understood everything. And good results came out.

Thank you very much!

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