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# HTTP_Download::guessContentType()

HTTP_Download::guessContentType() -- Guess content type of file

## Synopsis

``mixed HTTP_Download::guessContentType` ()`

## Description

Use only if you send a file.

First we try to use MIME_Type, if installed, to detect the content type, else we check if ext/mime_magic is loaded and properly configured.

Returns PEAR_Error if:

MIME_Type failed to detect a proper content type (`HTTP_DOWNLOAD_E_INVALID_CONTENT_TYPE`)
ext/magic.mime is not installed, or not properly configured (`HTTP_DOWNLOAD_E_NO_EXT_MMAGIC`)
mime_content_type() couldn't guess content type or returned a content type considered to be bogus by setContentType() (`HTTP_DOWNLOAD_E_INVALID_CONTENT_TYPE`)

## Return value

Returns `TRUE` on success, PEAR_Error on failure.

## Note

This function can not be called statically.

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HTTP_Download::setContentDisposition() | Up | HTTP_Download::send()