Yii2: MultipartFormDataParser produces an ErrorException

[Kolyunya]

What steps will reproduce the problem?

Parse a request with using a MultipartFormDataParser.

What is the expected result?

No errors occur.

What do you get instead?

An ErrorException is being thrown:

Only variables should be passed by reference

The exception is caused by a notices generated by this line:

$lastKey = array_pop(array_keys($current));

Should we extract array_keys($current) to a separate variable to fix this?

Additional info

| Q | A
| ---------------- | ---
| Yii version | 2.0.14
| PHP version | 7.1
| Operating system | GNU/Linux

[samdark]

Please check 2.0.14.

[Kolyunya]

@samdark the code I refer to is both in 2.0.14 and master.

[bscheshirwork]

link in the topic refer to the master https://github.com/yiisoft/yii2/blob/313be2a5d75951e48273c6dae04eba2ab879fba9/framework/web/MultipartFormDataParser.php#L323

[Kolyunya]

@bscheshirwork while the link indeed, refers to the master the very same code is still in 2.0.14. Here's a link specifically for the 2.0.14.

[bscheshirwork]

Yes, of course.

[cebe]

Could you provide a test case or request content that produces this error?