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The functions in this module try to guess the content type and encoding of a file by looking for certain magic byte sequences at specific positions within the file. While this is not a bullet proof approach the heuristics used do a very good job.
This extension is derivated from Apache mod_mime_magic, which is itself based on the file command maintaind by Ian F. Darwin. See the source code for further historic and copyright information.
The extension needs a copy of the magic.mime as distributed with the file command. This file also part of most recent Linux distributions and usually stored in the /usr/share/misc directory.
Das Verhalten dieser Funktionen wird von Einstellungen in der php.ini bestimmt.
Tabelle 1. Mimetype configuration options
Name | Default | Changeable |
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mime_magic.magicfile | "/usr/share/misc/magic.mime" | PHP_INI_SYSTEM |
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mhash | Nach oben | mime_content_type |