3v4l.org

run code in 300+ PHP versions simultaneously

@ 2022-05-26T20:24:14Z

<?php

/** @param array{foo: string} $strArr */
function bar(array $strArr): string
{
    $strArr["foo"] .= "bar";
    return $strArr["foo"];
}

class Foo
{
    /** @var array<string, string> */
	private array $stuff = ["foo" => "foo"];
    
    /**
    * @param non-empty-list<string> $param
    * @return string
    */
    public function foo(array $param)
    {
        $arr = &$this->stuff[$param[0]];	// This seems to cause Psalm to blackout.
        bar($this->stuff);
        var_dump($this->stuff);
        /** @var string */
        $x = $arr;
        /** @psalm-trace $x, $arr */;
        
        // This trace doesn't work, and $x's type appears to be mixed at this point.
        /** @psalm-trace $x */
        return $x;
    }
}

$foo = new Foo();
$foo->foo(["foo"]);

Output for git.master, git.master_jit, rfc.property-hooks: array(1) { ["foo"]=> &string(6) "foobar" }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

136.99 ms | 405 KiB | 5 Q