Online PHP editor | output for JVK8u

@ 2013-03-28T00:32:22Z

<?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(array $names) {
        $data = [];
        foreach ($names as $name) {
            $data[$name] = $this->get($name);
        }
        return $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(['foo',
                                'bar',
                                'qux',
                                'zip']));
                    });
                var_dump($c->getAll(['foo',
                        'bar',
                        'qux',
                        'zip']));
            });
        var_dump($c->getAll(['foo',
                'bar',
                'qux',
                'zip']));
    });

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7: array(4) { ["foo"]=> int(1) ["bar"]=> int(3) ["qux"]=> int(5) ["zip"]=> int(6) } array(4) { ["foo"]=> int(1) ["bar"]=> int(3) ["qux"]=> int(4) ["zip"]=> NULL } array(4) { ["foo"]=> int(1) ["bar"]=> int(2) ["qux"]=> NULL ["zip"]=> NULL }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/JVK8u on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/JVK8u on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/JVK8u on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/JVK8u on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/JVK8u on line 5
Process exited with code 255.

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