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@ 2018-10-05T18:13:33Z

<?php

class Collection
{
    private $things;
    
    public function construct(Thing ...$things)
    {
        var_dump($things);
        $this->things = $things;
    }
    
    public function applyToAll()
    {
        /**
         * This was the function in question
         */
        array_map(function($thing) {
            $thing->apply();
        }, $this->things);
    }
}

interface Thing
{
    public function apply();
}

class FooThing implements Thing
{
    public function apply()
    {
        echo 'applied the way Foo does things.';
    }
}

class BarThing implements Thing
{
    public function apply()
    {
        echo 'Bar had something different done to it.';
    }
}

$collection = new Collection(new FooThing, new BarThing);
$collection->applyToAll();

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/M6j9s:18 Stack trace: #0 /in/M6j9s(18): array_map(Object(Closure), NULL) #1 /in/M6j9s(46): Collection->applyToAll() #2 {main} thrown in /in/M6j9s on line 18
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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