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How to get file extension?

Siripa Siangklom
Ranch Hand

Joined: Jan 26, 2004
Posts: 79
A content-type/mime-type to file extension mapping is ambiguous. For example:
image/jpeg can be .jpg or .jpeg file.
How to get file extension exactly from content type?
Frank Carver

Joined: Jan 07, 1999
Posts: 6920
There is no way to do this. In fact, there is no particular reason why a file should even have a file extension.
Can you explain a little more about what you are trying to achieve by doing this? It's quite likely we can come up with alternative solutions.

Read about me at ~ Raspberry Alpha Omega ~ Frank's Punchbarrel Blog
I agree. Here's the link:
subject: How to get file extension?