Advanced Text Widget is a text widget that allows you to execute raw PHP
code and specify on which pages it should be displayed. It comes with
10 default visibility conditions. You can edit and/or add your own
visibility conditions as well. Conditions support arguments which could
be strings and/or arrays.
https://downloads.wordpress.org/plugin/advanced-text-widget.2.0.10.zip
https://downloads.wordpress.org/plugin/advanced-text-widget.2.0.10.zip