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

• PHP_CodeCoverage 1.3 requires PHP 5.4.7 (or later).
• Xdebug 2.2.1 (or later) is required.

You can use the PEAR Installer or Composer to download and install PHP_CodeCoverage as well as its dependencies

Depending on your OS distribution and/or your PHP environment, you may need to install PEAR or update your existing PEAR installation before you can proceed with the following instructions. sudo pear upgrade PEAR usually suffices to upgrade an existing PEAR installation. The PEAR Manual explains how to perform a fresh installation of PEAR.

The following two commands (which you may have to run as root) are all that is required to install PHP_CodeCoverage using the PEAR Installer:

pear config-set auto_discover 1
pear install pear.phpunit.de/PHP_CodeCoverage

After the installation you can find the PHP_CodeCoverage source files inside your local PEAR directory; the path is usually /usr/lib/php/PHP/CodeCoverage.

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 1.2:

{
    "require": {
        "phpunit/php-code-coverage": ">=1.2.10,<1.3.0"
    }
}

<?php
require 'PHP/CodeCoverage/Autoload.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');