WP Sidebar Essential

The normal Text widget allows you to insert arbitrary Text and/or HTML code.
This allows that too, but also parses any inserted Shortcode and PHP code and executes smoothly.

All Shortcode must be enclosed in the standard [ and ] tags for it to be
recognized.
All PHP code must be enclosed in the standard tags for it to be
recognized.

1. Upload wp-sidebar-essential.php to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Use the widget like any other widget.

1. 

   The widgets screen showing a PHP code widget in use.

2. 

   The widgets screen showing a shortcode widget in use.