[](https://travis-ci.org/sebastianbergmann/phpunit-mock-objects)[](https://packagist.org/packages/phpunit/phpunit-mock-objects)# PHPUnit_MockObject**PHPUnit_MockObject** is the default mock object library for PHPUnit.## Requirements* PHP 5.3.3 is required but using the latest version of PHP is highly recommended## InstallationTo add PHPUnit_MockObject as a local, per-project dependency to your project, simply add a dependency on `phpunit/phpunit-mock-objects` to your project's `composer.json` file. Here is a minimal example of a `composer.json` file that just defines a dependency on PHPUnit_MockObject 2.3: { "require": { "phpunit/phpunit-mock-objects": "2.3.*" } }