Bug report

Although the first parameter of extract() is marked as having to be passed by-ref, it also accepts by-val expressions. See php/doc-en#3676 (comment) for explanation.

As a consequence, the following code:

extract([ 'answer' => 42 ]);

is perfectly valid and phpstan should not generate the error Parameter #1 $array of function extract is passed by reference, so it expects variables only.

Code snippet that reproduces the problem

https://phpstan.org/r/2570bf4a-8bdd-42d0-8006-61dcd4d77eb8

Expected output

No error.

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