3v4l.org

run code in 300+ PHP versions simultaneously

@ 2020-07-15T14:31:32Z

<?php

class A {}
class B {}
class C extends A {}

$tests = [
    1 => [new A(), new A()], // succeeds
    2 => [new A(), new B()], // fails
    3 => [new C(), new C()], // succeeds
];


echo 'TEST 1:' . PHP_EOL;
foreach ($tests as $index => $collection) {
    try {
        array_map(static function (A $object): void {}, $collection);
    } catch (\TypeError $e) {
        echo sprintf('Index %d failed, because it doesn\'t contain instances of A only.' . PHP_EOL, $index);
    }
}
echo PHP_EOL;

echo 'TEST 2:' . PHP_EOL;
foreach ($tests as $index => $collection) {
    try {
        array_map(static function (C $object): void {}, $collection);
    } catch (\TypeError $e) {
        echo sprintf('Index %d failed, because it doesn\'t contain instances of C only.' . PHP_EOL, $index);
    }
}

Output for git.master, git.master_jit, rfc.property-hooks: TEST 1: Index 2 failed, because it doesn't contain instances of A only. TEST 2: Index 1 failed, because it doesn't contain instances of C only. Index 2 failed, because it doesn't contain instances of C only.

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

preferences:dark modelive previewkey bindings

184.4 ms | 406 KiB | 5 Q