his plugin gives every widget an extra control field called „Widget logic” that lets you control the pages that the widget will appear on. The text field lets you use WP’s Conditional Tags, or any general PHP code.
PLEASE NOTE The widget logic you introduce is EVAL’d directly. Anyone who has access to edit widget appearance will have the right to add any code, including malicious and possibly destructive functions. There is an optional filter ‘widget_logic_eval_override’ which you can use to bypass the EVAL with your own code if needed. (See Other Notes).
There is also an option to add a wordpress ‘widget_content’ filter — this lets you tweak any widget’s HTML to suit your theme without editing plugins and core code.
If you like and use Widget Logic you could consider a small donation to Cancer Research UK. I have a JustGiving.com donation link. As of December 2011 we have raised 440 UKP. I’m going to aim to have upped that to 750 UKP by the end of 2012.
Social Translation: https://translate.foe-services.de