Ampersandwich.ee2_addon is a project mainly written in PHP, it's free.
An addon for ExpressionEngine 2 to encode ampersands for better typography.
One of the guidelines from the seminal book on typography by Robert Bringhurt, "The Elements of Typographic Style" states that "In heads and titles, use the best ampersand available". This plugin attempts to allow you to do just that with your text in ExpressionEngine 2.
To use this plugin, wrap anything you want to be processed by it between the following tag pairs. Entry titles or headline text works best though it should be able to handle most things you can throw at it.
{exp:ampersand:wich}{title}{/exp:ampersand:wich}
2.0.1 - Added support NSM Addon Updater 2.0.0 - Initial version for EE 2.1 and newer
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