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@ 2018-12-18T17:42:49Z

<?php

namespace Foo {
    class App {
        const SOME_CONST = 5;
        public function __construct($a) {
            echo __METHOD__ . " $a\n";
        }
    }
}

namespace Foo\Api {
    class Api {
        private $var = 2;
        
        public function __construct($a) {
            echo __METHOD__ . " " . get_class($a) . "\n";
        }

        public function run() {
            echo __METHOD__;
        }
    }
}

namespace Whatever {
    use Foo\Api\Api;
    use Foo\App as Foo;
    
    
//    require __DIR__ . '/path/to/vendor/autoload.php';
    var_dump(
      Api::class,               // "Foo\Api\Api"
      class_exists(Api::class), // bool(true)
      Foo::class,               // "Foo\App"
      class_exists(Foo::class)  // bool(true)
    );
    $api = new Api(
      new Foo(Foo::SOME_CONST)  // Fatal Error: Class "Foo\Api\Foo" not found ...
    );
    $api->run();
}

Output for git.master, git.master_jit, rfc.property-hooks: string(11) "Foo\Api\Api" bool(true) string(7) "Foo\App" bool(true) Foo\App::__construct 5 Foo\Api\Api::__construct Foo\App Foo\Api\Api::run

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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