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filter is not described

sanitize_mime_type filter-hook . WP 3.1.3

Filters a mime type following sanitization.

Usage

add_filter( 'sanitize_mime_type', 'filter_function_name_7623', 10, 2 );
function filter_function_name_7623( $sani_mime_type, $mime_type ){
	// filter...

	return $sani_mime_type;
}
$sani_mime_type(string)
The sanitized mime type.
$mime_type(string)
The mime type prior to sanitization.

Where the hook is called

sanitize_mime_type()
wp-includes/formatting.php 4840
return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type );

Where the hook is used (in WP core)

Does not used.