A question about PHP form Upload

A php form Upload problem I made a small PHP Upload interface. After I found that I could not upload a ZIP file, I wondered if it had resolved the ZIP file as a binary file, cannot Upload zip files? In this case, $ _ FILES ['form control name'] ['error'] will have an error message indicating that the code is generally a problem where the file size exceeds the PHP form Upload size.
I made a small PHP Upload interface and found that I could not upload a ZIP file. I doubt whether it used the ZIP file as a binary file for parsing.

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Cannot Upload zip files? Then $ _ FILES ['form control name'] ['error'] will have an error code prompt
Generally, the file size exceeds the limit, not binary.
Http://php.net/manual/zh/features.file-upload.errors.php
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1. your receiving program stops such files from being uploaded.
2. the maximum upload size you allow is insufficient to accommodate the uploaded files.