Model.php

<?php
//
$view = new View();
$view->addGlobal('global', 'Hello!, I\'m a Global var.');

// in the method
echo $view->render('controller.method.phtml', ['var' => 'Hello World!']);

View.php

<?php

class View
{
    protected $template;

    private $globals = array();
    private $parameters = array();

    public function getGlobals(): array
    {
        return $this->globals;
    }

    public function addGlobal( $name, $value )
    {
        $this->globals[$name] = $value;
    }

    public function render( $name, array $parameters = array() ) {
        $storage = $name;
        $parameters = array_replace($this->getGlobals(), $parameters);

        $content = $this->evaluate($storage, $parameters);
        return $content;
    }

    public function include( $name, array $parameters = array() )
    {
        echo $this->render( $name, $parameters );
    }

    protected function evaluate( $template, array $parameters = array() )
    {
        $this->template = $template;
        $this->parameters = $parameters;
        unset($template, $parameters);

        extract($this->parameters, EXTR_SKIP);
        $this->parameters = null;

        ob_start();
        require $this->template;
        $this->template = null;

        return ob_get_clean();
    }
}