No error when creating zip, but it doesn't get created

Question

I wrote this code to create a ZIP file and to save it. But somehow it just doesn\'t show any error, but it doesn\'t create a ZIP file either. Here\'s the code:

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Answer 1

One of the reasons for zip file is not created is due to missing check if you are adding file and not a directory.

if (!$file->isDir())

I found the solution here.