serve php in phpunit test

serve-php-in-tests.php

public static $pid;

public static function setUpBeforeClass() :void
{
    self::$pid = exec("php -S localhost:9000 -t ../../public > /dev/null 2>&1 & echo $!");
}

public static function tearDownAfterClass() :void
{
     exec('kill ' . self::$pid);
}