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  1. Before you try to process the file, you need to make sure that your $err value is equivalent to _________.
    1. UPLOAD_ERR
    2. UPLOAD_ERR_NO_OK
    3. UPLOAD_NO_ERR
    4. UPLOAD_ERR_OK
    5. None of these
Correct Option: D

When you’re dealing with files uploaded through an HTML form, you have access to a special constant called UPLOAD_ERR_OK that tells you whether a file uploaded successfully.


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