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@ 2015-07-28T17:55:12Z

<?php

class Thing
{

    private $foo;
    private $bar;
    private $qux;

    public function __construct($foo, $bar, $qux)
    {
        $this->foo = $foo;
        $this->bar = $bar;
        $this->qux = $qux;
    }

}

class Builder
{

    private $foo;
    private $bar;

    public function withFoo($foo)
    {
        $this->foo = $foo;
        return $this;
    }

    public function withBar($bar)
    {
        $this->bar = $bar;
        return $this;
    }

    public function withQux($qux)
    {
        try {
            return new Thing($this->foo, $this->bar, $qux);
        }
        finally {
            $this->reset();
        }
    }

    private function reset()
    {
        $this->foo = null;
        $this->bar = null;
    }

}

function test(Builder $builder)
{
    return [
        $builder->withFoo('a')->withBar('b')->withQux('c'),
        $builder->withFoo('d')->withQux('e'),
        $builder->withQux('f'),
    ];
}

var_dump(test(new Builder()));

Output for git.master, git.master_jit, rfc.property-hooks: array(3) { [0]=> object(Thing)#2 (3) { ["foo":"Thing":private]=> string(1) "a" ["bar":"Thing":private]=> string(1) "b" ["qux":"Thing":private]=> string(1) "c" } [1]=> object(Thing)#3 (3) { ["foo":"Thing":private]=> string(1) "d" ["bar":"Thing":private]=> NULL ["qux":"Thing":private]=> string(1) "e" } [2]=> object(Thing)#4 (3) { ["foo":"Thing":private]=> NULL ["bar":"Thing":private]=> NULL ["qux":"Thing":private]=> string(1) "f" } }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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