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I have a PHP application.
I allow users to upload files to my web application.
Question: What's the best way for me to sanitize the file names of the uploaded documents $_FILES["filename"]["tmp_name"] in PHP?
UPDATE:
Can I take an MD5 of the uploaded filename and use that as the newly assigned filename? If so, how do I do that in PHP?
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You can simply change the name of the file by changing the name of the file in the second parameter of move_uploaded_file . $temp = explode(".", $_FILES["file"]["name"]); $newfilename = round(microtime(true)) . '.
$_FILES['file']['tmp_name'] - The temporary filename of the file in which the uploaded file was stored on the server.
I bet that you also store some information about the file in the database. If this is correct, then you can use the primary key (ID) as a filename on your server and preserve the original filename in the database. This gives you greater flexibility, because you can manipulate the metadata without renaming the actual file.
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