function dozent_sanitize_array( $arr ) {
        if ( is_array( $arr ) && count( $arr ) ) {
            foreach ( $arr as $key => $value ) {
                if ( is_array( $value ) ) {
                    $arr[ $key ] = dozent_sanitize_array( $value );
                } else {
                    $arr[ $key ] = dozent_sanitize_html( $value );
                }
            }
        }

        return $arr;
    }