从file_get_contents中检索数据（'php：// input'）; [重复]

This question already has an answer here:

Manually parse raw multipart/form-data data with PHP 6 answers

I am using file_get_contents('php://input') function. How can I convert below data into array?

Content-Disposition: form-data; name="accessKey"

test12313
-----------------------------2154836642318
Content-Disposition: form-data; name="username"

test123
-----------------------------2154836642318--

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The answer is found by knowing what to ask:

Manually parse raw HTTP data with PHP

You may be able to get away with using PHP's parse_str function, but there is discussion of a custom solution and links to it when you follow my link.