PHP unit Globally with Xampp and Windows

To use PHP Unit globally and with XAMPP and Windows follow this. Using Git bash run

composer global require "phpunit/phpunit=4.1.*"

then run

phpunit --version

to check its installed. Download to a new folder in C:/xampp/phpunit PHP Unit with the command

composer require --dev phpunit/phpunit ^5

In your website directory create a folder called tests. In here create a file called StackTest.php and add this code

<?php
use PHPUnit\Framework\TestCase;

class StackTest extends TestCase
{
    public function testPushAndPop()
    {
        $stack = [];
        $this->assertEquals(0, count($stack));

        array_push($stack, 'foo');
        $this->assertEquals('foo', $stack[count($stack)-1]);
        $this->assertEquals(1, count($stack));

        $this->assertEquals('foo', array_pop($stack));
        $this->assertEquals(0, count($stack));
    }
}
?>

Globally you can now run

phpunit --bootstrap C:/xampp/phpunit/vendor/autoload.php StackTest.php

to run your tests.