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# PHP_CodeCoverage

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

## Requirements

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

### PHP 7

[phpdbg](http://phpdbg.com/docs) is currently the only source of raw code coverage data supported for PHP 7. Once Xdebug has been updated for PHP 7 it, too, will be supported.

### HHVM

A version of HHVM that implements the Xdebug API for code coverage (`xdebug_*_code_coverage()`) is required.

## Installation

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 2.0:

{
        "require": {
            "phpunit/php-code-coverage": "^2"
        }
    }

## Using the PHP_CodeCoverage API

```php
<?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');
```