Online PHP editor | rfc for v7YYP

@ 2019-10-10T16:35:01Z

<?php

/**
 * This class implements ArrayAccess and the magic
 * isset method to test the behavior of certain operators
 * 
 * It simulates having just a property called a
 */
class Test implements ArrayAccess
{
    
    public function __isset($property) {
        return $property === 'a';
    }
    
    public function __get($property) {
        return $property === 'a'? 'a' : null;
    }
    
    
    public function offsetExists ( $offset ) : bool {
        return $offset === 'a';
    }
    
    /**
     * We are required by the interface to implement these methods
     * but they're irrelevant to our test
     */
    public function offsetGet ( $offset ) {
        return $offset === 'a'? 'a' : null;
    }
    
    public function offsetSet ($offset , $value ) : void {
        return;
    }
    
    public function offsetUnset ($offset ) : void {
        return;
    }

}

/**
 * Start performing the actual tests, we wanna compare the
 * behavior of isset() and the ?? operator
 */
$tests = [
    'isset->a' => function($e) { return isset($e->a) && $e->a? $e->a : false; },
    'isset->b' => function($e) { return isset($e->b) && $e->b? $e->b : false; },
    'isset[a]' => function($e) { return isset($e['a']) && $e['a']? $e['a'] : false; },
    'isset[b]' => function($e) { return isset($e['b']) && $e['b']? $e['b'] : false; },
    '[a]??false' => function($e) { return $e['a']??false; },
    '[b]??false' => function($e) { return $e['b']??false; },
    '->a??false' => function($e) { return $e->a??false; },
    '->b??false' => function($e) { return $e->b??false; }
];

$a = new Test();

foreach ($tests as $caption => $fn) {
    echo $caption, ': ', ($fn($a)? $fn($a) : 'false'), PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: Return type of Test::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/v7YYP on line 29 isset->a: a isset->b: false isset[a]: a isset[b]: false [a]??false: a [b]??false: false ->a??false: a ->b??false: false

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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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