PHPUnit is a programmer-oriented testing framework for PHP.
It is an instance of the xUnit architecture for unit testing frameworks.
PHPUnit 4.8 is the current old stable release series.
It became stable on August 7, 2015.
Its support ends on February 3, 2017.
You can find out what's new in PHPUnit 4.8 in the release announcement.
PHPUnit 4.8 is supported on PHP 5.3, PHP 5.4, PHP 5.5, and PHP 5.6.
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