Why Can't I Use the `finfo` Function in PHP?

Error: PHP fInfo Function Undefined

Issue:

When attempting to retrieve MIME content types using PHP, users encounter fatal error messages such as "Class 'finfo' not found" or "Call to undefined function finfo_open."

Cause and Solution:

The issue stems from the fileinfo extension not being enabled in the PHP configuration file (php.ini).

Resolution:

To resolve this, verify that the following line is present and uncommented in your php.ini file:

extension=fileinfo.so (Linux/Unix)
extension=php_fileinfo.dll (Windows)

If the line is missing or commented out (with a semicolon ; at the beginning), uncomment it and restart your PHP web server. This will load the fileinfo extension and make the fInfo functions available.

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