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# phpunit/php-code-coverage[](https://packagist.org/packages/phpunit/php-code-coverage)[](https://github.com/sebastianbergmann/php-code-coverage/actions)[](https://shepherd.dev/github/sebastianbergmann/php-code-coverage)Provides collection, processing, and rendering functionality for PHP code coverage information.## InstallationYou 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```## Usage```php<?php declare(strict_types=1);use SebastianBergmann\CodeCoverage\Filter;use SebastianBergmann\CodeCoverage\Driver\Selector;use SebastianBergmann\CodeCoverage\CodeCoverage;use SebastianBergmann\CodeCoverage\Report\Html\Facade as HtmlReport;$filter = new Filter;$filter->includeDirectory('/path/to/directory');$coverage = new CodeCoverage((new Selector)->forLineCoverage($filter),$filter);$coverage->start('<name of test>');// ...$coverage->stop();(new HtmlReport)->process($coverage, '/tmp/code-coverage-report');```