LVII. Mimetype Functions

Introducere

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.

Necesități

Aceste funcții sunt disponibile ca părți ale modulului standard care este întotdeauna disponibil.

Instalare

You must compile PHP with the configure switch --with-mime-magic to get support for mime-type functions. The extension needs a copy of the simplified magic file that is distributed with the Apache httpd.

Notã: The configure option has been changed from --enable-mime-magic to --with-mime-magic since PHP 4.3.2

Notã: This extension is not capable of handling the fully decorated magic file that generally comes with standard Linux distro's and is supposed to be used with recent versions of file command.

Configurare la rulare

The behaviour of these functions is affected by settings in php.ini.

Tabel 1. Mimetype configuration options

NameDefaultChangeable
mime_magic.magicfile"/usr/share/misc/magic.mime"PHP_INI_SYSTEM
For further details and definition of the PHP_INI_* constants see ini_set().

Tipuri de resurse

Această extensie nu definește tipuri de resurse.

Constante predefinite

Această extensie nu definește constante.

Cuprins
mime_content_type -- Detect MIME Content-type for a file