Simple Should port for PHP - complete framework https://github.com/GabrielJMJ/ShouldPHP

Environment.php

<?php
class Environment
{
	private $shouldState;
	private $verbs = array('be', 'have');
	private $toTest;

	public function __construct($toTest, $shouldState = false, $verb = null)
	{
		$this->toTest = $toTest;
		$this->shouldState = $shouldState;
		$this->verb = $verb;
	}

	public function __get($property)
	{
		if ($property === 'should') {
			return new Environment($this->toTest, true);
		} elseif (in_array($property, $this->verbs)) {
			return new Environment($this->toTest, true, $property);
		}
	}
	
	public function __call($method, $params)
	{
		if ($this->shouldState) {
			$method = $this->verb . ucfirst($method);
			return $this->{$method}($params);
		}
	}

	private function beEquals(array $params)
	{
		return $this->toTest === $params[0];
	}
	
	private function beAnInstanceOf(array $params)
	{
		return $this->toTest instanceof $params[0];
	}
}

example.php

<?php
$e = new Environment(new stdClass);
var_dump($e->should->be->anInstanceOf('stdClass'));