Bit.ly PHP library by Yii, is an extension that helps to interact with the API. Requirements Yii 1.0 or above. What this PHP extension can do is to shorten an URL, expand a short URL into the original long form, validate API key, obtain number of clicks for a short URL, and check if a domain uses bit.ly Pro.
Twitter recently announced what developers have been expecting since at least its Chirp conference. Links posted to Twitter will soon be passed through the company's own link shortener, t.co. It could be bad news for other services built to fill the link shortening need, such as Bit.ly (our Bit.ly API profile).
At the bottom of many blog posts (including this one) and website entries you're likely to find a widget that allows sharing to social sites or emailing to a friend. ShareThis competes with other systems like AddThis and SocialTwist to give publishers an easy-to-install sharing method.
Link shortening is no longer just something you do to fit into tweets or keep emails from wrapping. For many, especially those in marketing, it's also a great way to track clicks as their content gets spread across the web. BudURL keeps its focus on fulfilling the link shortening needs of businesses. And now it's added a professional version with custom URLs, analytics and a BudURL.Pro API to access it all.