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@ 2020-01-29T21:41:09Z

<?php

$config = [
    "testA" => true,
    "testB" => 22,
    0 => 0
];

class Processor
{
    public  $systemVarA;
    public  $systemVarB;

    private function validators() {
        return  
            [
                'testA' => function($value) {
                    if (!is_bool($value)) throw new \Exception( "Configuration '$name' must be boolean.");
                        $this->systemVarA = $value;
                },
                'testB' => function($value) {
                    if (!is_int($value)) throw new \Exception( "Configuration '$name' must be integer.");
                        $this->systemVarB = $value;
                }
            ];
    }

    public function validate($array) {
        $validators = $this->validators();
        foreach($array as $key => $value)
            if(is_callable($validators[$key]))
                $validators[$key]($value);
    }
}

$proc = new Processor;
$proc->validate($config);
var_dump($proc);

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined array key 0 in /in/uYHWA on line 31 object(Processor)#1 (2) { ["systemVarA"]=> bool(true) ["systemVarB"]=> int(22) }

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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