Evaluates PHP tags in Posts (of any kind, including Pages); and in text widgets. Very lightweight; plus it supports `[php][/php]` shortcodes!
This plugin add custom page with theme text variables (configurable) to use inside the templates.
Creates shortcodes to add HTML, PHP, forms, opt-ins, iframes, Adsense, code snippets, reusable objects, etc, to posts/pages and preserves formatting.
Define only once some global content and reuse easily in templates and posts/pages as many times as required
Allow PHP in posts and pages allows you to add php functionality to WordPress Posts and Pages
Lets you output a POST or GET variable in the page via shortcode.
AnyVar is a simple search and replace plugin. It lets you add changeable variables (text snippets) to posts, sidebars, widgets, links & themes.