WordPress at a glance
filter is not described

sanitize_mime_type filter-hook . WP 3.1.3

Filters a mime type following sanitization.


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;
The sanitized mime type.
The mime type prior to sanitization.

Where the hook is called

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.