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

There are 2 cases when zip doesn't generate the error.

1. Make sure every file you are adding to the zip is valid. Even if one file is not available when
   zip->close is called then the archive will fail and your zip file won't be created.
2. If your folder doesn't have write permissions zip will not report the error. It will finish but nothing will be created.