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@ 2014-03-25T02:53:14Z

<?php

    namespace One
        {
    
        class Request
            {
    
            public function getResponse()
                {
                return new Response();
                }
    
            }
    
        class Response
            {
    
            public function __construct()
                {
                $debug = debug_backtrace();
                if (count($debug) < 2 || !isset($debug[1]['class']) || strpos($debug[1]['class'], __NAMESPACE__ . '\\') !== 0)
                    {
                    die('Invalid context');
                    }
                echo 'Created' . PHP_EOL;
                }
    
            }
    
        }
    
    namespace Two
        {
        $request = new \One\Request();
        $response = $request->getResponse(); // Should work
        $wrongResponse = new \One\Response(); // Should NOT work
        }

Output for git.master, git.master_jit, rfc.property-hooks: Created Invalid context

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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