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@ 2015-08-27T14:12:36Z

<?php

class Singleton {
    private static $instance;

    private function __construct() {}

    private function __clone() {}

    private function __wakeup() {}

    public static function getInstance() {
        if (empty(self::$instance))
            self::$instance = new self();

        return self::$instance;
    }
}

$Object1 = Singleton::getInstance();

// -------------------------------------------------------

class PrivacyViolator {
    private $_caller;

    function __construct() {
        $this->_caller = function ($method, $args) {
            echo $this;
            return call_user_func_array([$this, $method], $args);
        };
    }

    function callPrivateMethod($object, $method, $args) {
        return $this->_caller->bindTo($object, $object)->__invoke($method, $args);
    }
}

$privacyViolator1 = new PrivacyViolator();
$privacyViolator1->callPrivateMethod($Object1, '__construct', []);

echo $Object1 == $privacyViolator1 ? '+' : '-';
echo $Object1 === $privacyViolator1 ? '+' : '-';

Output for git.master, git.master_jit, rfc.property-hooks: Warning: The magic method Singleton::__wakeup() must have public visibility in /in/ffI8A on line 10 Fatal error: Uncaught Error: Object of class Singleton could not be converted to string in /in/ffI8A:29 Stack trace: #0 /in/ffI8A(35): Singleton->{closure}('__construct', Array) #1 /in/ffI8A(35): Closure->__invoke('__construct', Array) #2 /in/ffI8A(40): PrivacyViolator->callPrivateMethod(Object(Singleton), '__construct', Array) #3 {main} thrown in /in/ffI8A on line 29
Process exited with code 255.

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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