Online PHP editor | rfc for fnDPQ

@ 2016-01-13T20:14:44Z

<?php

class Coalescing
{
    protected $attributes = [
        'attribute1' => 'value1',
    ];

    public function __get($name)
    {
        print "GET\n";
        if (array_key_exists($name, $this->attributes)) {
            return $this->attributes[$name];
        }

        trigger_error("Property $name does not exist");
        return null;
    }

    public function __isset($name)
    {
        print "ISSET\n";
        return array_key_exists($name, $this->attributes);
    }
}


$coal = new Coalescing();

version_compare(PHP_VERSION, "7.0", ">=") && eval('var_dump($coal->attribute1 ?? "default");');
//GET
//string(6) "value1"

version_compare(PHP_VERSION, "7.0", ">=") && eval('var_dump($coal->attribute2 ?? "default");');
//GET
//PHP Notice:  Property attribute2 does not exist in /var/www/html/test.php on line 23
//PHP Stack trace:
//PHP   1. {main}() /var/www/html/test.php:0
//PHP   2. Coalescing->__get() /var/www/html/test.php:41
//PHP   3. trigger_error() /var/www/html/test.php:23
///var/www/html/test.php:41:
//string(7) "default"

Output for git.master, git.master_jit, rfc.property-hooks: ISSET GET string(6) "value1" ISSET string(7) "default"

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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