PHP_CodeCoverage is a library that provides collection, processing, and rendering functionality for PHP code coverage information.

• PHP 5.3.3 is required but using the latest version of PHP is highly recommended
• Xdebug 2.1.3 is required but using the latest version of Xdebug is highly recommended

To add PHP_CodeCoverage as a local, per-project dependency to your project, simply add a dependency on phpunit/php-code-coverage to your project's composer.json file. Here is a minimal example of a composer.json file that just defines a dependency on PHP_CodeCoverage 3.0:

{
    "require": {
        "phpunit/php-code-coverage": "3.0.*"
    }
}

<?php
$coverage = new PHP_CodeCoverage;
$coverage->start('<name of test>');

// ...

$coverage->stop();

$writer = new PHP_CodeCoverage_Report_Clover;
$writer->process($coverage, '/tmp/clover.xml');

$writer = new PHP_CodeCoverage_Report_HTML;
$writer->process($coverage, '/tmp/code-coverage-report');