PhpInputStream's getSize function is Wrong!

[weierophinney]

reference: https://www.php.net/manual/en/wrappers.php.php
php://input is not support fstat

Supports stat()	php://memory and php://temp only.

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Originally posted by @zhushengwen at zendframework/zend-diactoros#380

[weierophinney]

@zhushengwen

fstat and stat are two different PHP functions.

Can you provide failing test case, please?

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Originally posted by @michalbundyra at zendframework/zend-diactoros#380 (comment)

[weierophinney]

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Originally posted by @zhushengwen at zendframework/zend-diactoros#380 (comment)

[weierophinney]

@zhushengwen
Please create a pull request with an unit test which illustrates the problem.
It's very hard to reproduce the problem per screenshot. 😉

Thanks in advance!

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Originally posted by @froschdesign at zendframework/zend-diactoros#380 (comment)

[Xerkus]

fstat() can not be used on input stream. Stream needs to be fully read into internal cache property before the size could be determined but read should not happen on getSize() invocation.

Because size can not be determined for php input stream getSize() returns null and that is a correct behavior.

However, investigating this issue I discovered another problem that I will report as a separate issue.

[boesing]

I recently had a look into guzzle and they do in fact pass the stream over to a temp stream:
https://github.com/guzzle/psr7/blob/fe18df3deb34d1e0eab8a63ef4fe2aeb2a8e8c94/src/Utils.php#L305-L310

Not sure if we should handle this as well.

[Xerkus]

We use property to store cached content. It should really be temp stream, but I do not think we should eagerly read it for metadata and such.