PHP Class-Based Views

base_views.php

<?php
class Http404 extends Exception {
}

class Builder {
    private $callback, $args, $kwargs;
    public function __construct($callback, $args = array(), $kwargs = array()) {
        $this->callback = $callback;
        $this->args = $args;
        $this->kwargs = $kwargs;
    }
    public function __invoke() {
        return call_user_func(
            $this->callback,
            $this->args,
            func_get_args(),
            $this->kwargs
        );
    }
    public function __call($name, $args) {
        if (count($args) === 1) {
            $args = $args[0];
        }
        return new Builder(
            $this->callback, 
            $this->args,
            array_merge($this->kwargs, array($name => $args))
        );
    }
}

class View {
    public function __construct($args, $kwargs) {
        $this->args = $args;
        $this->kwargs = $kwargs;
        foreach ($this->kwargs as $key => &$value) {
            $this->{$key} = $value;
        }
    }
    public function get() {
        //throw new Http404();
        echo "Getting...\n";
    }
    public function post() {
        return call_user_func_array(array($this, 'static::get'), func_get_args());
    }
    public function dispatch() {
        echo "Dispatched!\n";
    }
    static public function asView() {
        $cls = new ReflectionClass(get_called_class());

        return new Builder(function ($init_args, $call_args, $kwargs) use ($cls) {
            return $cls->getMethod('dispatch')->invokeArgs(
                $cls->newInstance($init_args, $kwargs),
                $call_args
            );
        }, func_get_args());
    }
}

class ListView extends View {
}

class MyView extends ListView {
    public function dispatch($rwar) {
        echo "My View: " . implode(func_get_args(), ', ') . "\n";
        $this->post();
        parent::dispatch();
    }
}

$fn = MyView::asView()->template('hello/world.html');
$fn2 = $fn->helloWorld('rwar rwar');
$fn('hello', 'view');
$fn2('foo', 'bar');