Question

I want to post some binary data to PHP.
I know that I can use php://input or $HTTP_RAW_POST_DATA to read it.
But it only can post one binary data.
I want to post two key-value data which respective value is in binary.
How can we do this in PHP?

Answer 1

You can encode your binary data in Base64 using base64_encode() and base64_decode().

Base64 encoding schemes are commonly used when there is a need to
encode binary data that needs to be stored and transferred over media
that are designed to deal with textual data.

For example, you can post:

key1=eW91cmJpbmFyeWRhdGE=&key2=YmluYXJ5YWdhaW4=

And in your PHP:

$myBinaryData1 = base64_decode($_POST['key1']);
$myBinaryData2 = base64_decode($_POST['key2']);