版本选择PHP7.3、PHP7.4PHP7.2、PHP7.3安装 PHPUnit 版本选择 PHP7.3、PHP7.4PHPUnit 9 PHP7.2、PHP7.3PHPUnit 8 安装 PHPUnit全局安装 PHPUnit composer global require phpunit/phpunit ^8 当前项目安装 PHPUnit composer require --dev phpunit/phpunit ^8
