以编程方式运行PHPUnit Selenium测试用例(“在PHP内”)

如何在“ PHP内”运行测试而不是使用’PHPunit’命令？例：

<?PHP
require_once 'PHPUnit/Extensions/SeleniumTestCase.PHP';
class MySeleniumTest extends PHPUnit_Extensions_SeleniumTestCase {

    protected function setUp() {
        $this->setbrowser("*firefox");
        $this->setbrowserUrl("http://example.com/");
    }

    public function testMyTestCase() {
        $this->open("/");
        $this->click("//a[@href='/contact/']");
    }

}

$test = new MySeleniumtest();
//I want to run the test and get information about the results so I can store them in the database,send an email etc.
?>

或者我是否必须将测试写入文件,通过system()/ exec()调用PHPunit并解析输出？