[](https://packagist.org/packages/phpunit/php-code-coverage) [](https://travis-ci.org/sebastianbergmann/php-code-coverage)
PHP_CodeCoverage
**PHP_CodeCoverage** is a library that provides collection, processing, and rendering functionality for PHP code coverage information.
Requirements
PHP 5.6 is required but using the latest version of PHP is highly recommended.
PHP 5
[Xdebug](http://xdebug.org/) is the only source of raw code coverage data supported for PHP 5. Version 2.2.1 of Xdebug is required but using the latest version is highly recommended.
PHP 7
Version 2.4.0 (or later) of [Xdebug](http://xdebug.org/) as well as [phpdbg](http://phpdbg.com/docs) are supported sources of raw code coverage data for PHP 7.
HHVM
A version of HHVM that implements the Xdebug API for code coverage (`xdebug_*_code_coverage()`) is required.
Installation
You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
composer require phpunit/php-code-coverage
If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
composer require --dev phpunit/php-code-coverage
Using the PHP_CodeCoverage API
```php <?php $coverage = new \SebastianBergmann\CodeCoverage\CodeCoverage; $coverage->start('<name of test>');
// ...
$coverage->stop();
$writer = new \SebastianBergmann\CodeCoverage\Report\Clover; $writer->process($coverage, '/tmp/clover.xml');
$writer = new \SebastianBergmann\CodeCoverage\Report\Html\Facade; $writer->process($coverage, '/tmp/code-coverage-report'); ```