Brief Summary of Changes

I ran into a very weird issue on my Laravel project. When the file doesn't exist, I get this error while trying to upload the file:

   WARNING  Trying to access array offset on null in vendor/cloudinary/cloudinary_php/src/Utils/FileUtils.php on line 141.

This is the culprit method:

What happens is that $err = error_get_last(); on line 139 returns NULL.

This is weird because when I forked the project and added tests locally to check how it behaves with a non-existing file, it worked as expected.

I discovered that it's because of how Laravel handles error handling. It uses a custom error handler which intercepts all errors (including warnings), and PHP's built-in error system has no clue about what happened. In the end, error_get_last returns NULL.

The library assumes error_get_last will contain an array with a message key. But this is not the case in every PHP environment and framework.

This PR adds a fallback to address this issue. It doesn't change default behavior.

How to reproduce?

Create a fresh Laravel app, install cloudinary php, add a cloudinary url, and try to upload a non-existing file.

I published a test app to show and test the behavior, here.

What does this PR address?

• GitHub issue (Add reference - #XX)
• Refactoring
• New feature
• Bug fix
• Adds more tests

Are tests included?

• Yes (but the bug cannot be reproduced without a Laravel environment)
• [] No

Reviewer, please note:

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I ran the full test suite before pushing the changes and all of the tests pass.