wp_get_default_extension_for_mime_type() WordPress Function

The wp_get_default_extension_for_mime_type() function allows you to get the default file extension for a given mime type. This is useful if you need to determine the file extension for a file that doesn't have one, or if you want to change the extension of a file.

wp_get_default_extension_for_mime_type( string $mime_type ) #

function wp_get_default_extension_for_mime_type( $mime_type ) {
	$extensions = explode( '|', array_search( $mime_type, wp_get_mime_types(), true ) );

	if ( empty( $extensions[0] ) ) {
		return false;
	}

	return $extensions[0];
}