Online PHP editor | rfc for I9AZh

@ 2025-06-13T10:37:17Z

<?php

class MyAttributeBase {}

class MyAttribute extends MyAttributeBase {}

class C {
    public function __construct(
        #[\SensitiveParameter]
        #[MyAttribute]
        public string $x,
    ) {}
}

new C('hello');

$param = (new ReflectionMethod('C', '__construct'))->getParameters()[0];


spl_autoload_register(function (string $class) {
    $line = debug_backtrace()[1]['line'];
    print "Line $line: Trying to autoload $class.\n";
});

$attributes = $param->getAttributes(UnknownClass::class);
assert($attributes === []);

$attributes = $param->getAttributes(MyAttributeBase::class);
assert($attributes === []);

$attributes = $param->getAttributes(MyAttributeBase::class, \ReflectionAttribute::IS_INSTANCEOF);
assert(count($attributes) === 1);
assert($attributes[0]->getName() === MyAttribute::class);

$attributes = $param->getAttributes();
assert(count($attributes) === 2);
assert($attributes[0]->getName() === SensitiveParameter::class);
assert($attributes[1]->getName() === MyAttribute::class);

$attributes[0]->newInstance();

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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