Online PHP editor | rfc for ZkS7c

@ 2013-03-28T00:29:09Z

<?php

class Context {

    private $context = null;
    private $data    = [];

    public function __construct(Context $context = null) {
        $this->context = $context;
    }

    public function get($name) {
        if (isset($this->data[$name])) {
            return $this->data[$name];
        }
        if (isset($this->context)) {
            return $this->context->get($name);
        }
        return null;
    }

    public function getAll() {
        return $this->data;
    }

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

    public function wrap() {
        return new Context($this);
    }

    public function call(callable $function) {
        call_user_func($function, $this);
    }

}

(new Context)->call(function(Context $c) {
        $c->set('foo', 1);
        $c->set('bar', 2);
        $c->wrap()->call(function(Context $c) {
                $c->set('bar', 3);
                $c->set('qux', 4);
                $c->wrap()->call(function(Context $c) {
                        $c->set('qux', 5);
                        $c->set('zip', 6);
                        var_dump($c->getAll());
                    });
                var_dump($c->getAll());
            });
        var_dump($c->getAll());
    });

Output for git.master, git.master_jit, rfc.property-hooks: array(2) { ["qux"]=> int(5) ["zip"]=> int(6) } array(2) { ["bar"]=> int(3) ["qux"]=> int(4) } array(2) { ["foo"]=> int(1) ["bar"]=> int(2) }

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2020-03-21 RFC: Is_Literal - declined
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