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WordPress Plugin – Widget Logic

A nice plugin to use, so you can have different widgets displayed in different sections of your WordPress Website or Blog.  It adds a setting block at the bottom of your selected widgets in your dashboard and allows you to use some code to determine where on the site that particular widget is used.

Some code Examples:

• is_home() — just the main blog page
• !is_page('about') — everywhere EXCEPT this specific WP ‘page’
• is_category(array(5,9,10,11)) — category page of one of the given category IDs
• is_single() && in_category('baked-goods') — single post that’s in the category with this slug
• current_user_can('level_10') — admin only widget
• strpos($_SERVER['HTTP_REFERER'], "google.com")!=false — widget to show when clicked through from a google search
• is_category() && in_array($cat, get_term_children( 5, 'category')) — category page that’s a descendent of category 5
• global $post; return (in_array(77,get_post_ancestors($post))); — WP page that is a child of page 77
• global $post; return (is_page('home') || ($post->post_parent=="13")); – home page OR the page that’s a child of page 13

Note the extra ‘;’ on the end where there is an explicit ‘return’.

Use ! (NOT) in front of a conditional tag to reverse the logic, eg !is_home() to show a widget on any page except the home page.

More Info and Download Here.