LVII. Mimetype Functions

Einführung

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.

Anforderungen

Diese Erweiterung benötigt zur Erstellung keine externen Bibliotheken.

Installation

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.

Laufzeit Konfiguration

Das Verhalten dieser Funktionen wird von Einstellungen in der php.ini bestimmt.

Tabelle 1. Mimetype configuration options

Name	Default	Changeable
mime_magic.magicfile	"/usr/share/misc/magic.mime"	PHP_INI_SYSTEM

For further details and definition of the PHP_INI_* constants see ini_set().

Resource Typen

Diese Erweiterung definiert keine Resource-Typen.

Vordefinierte Konstanten

Diese Erweiterung definiert keine Konstanten.

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