3v4l.org

run code in 300+ PHP versions simultaneously

@ 2021-04-29T07:40:00Z

<?php

(function () {
    ${42} = 42;
    ${true} = true;

    $original = get_defined_vars();
    $combined = array_combine(array_keys($original), array_values($original));

    echo 'original: '; var_dump($original);
    echo 'combined: '; var_dump($combined);
    echo "\n";
    echo 'original keys: '; var_dump(array_keys($original));
    echo 'combined keys: '; var_dump(array_keys($combined));
    echo "\n";
    echo 'key-intersection: '; var_dump(array_intersect_key($original, $combined));
    echo "\n";
    foreach ($original as $varname => $_) {
        echo 'varname: '; var_dump($varname);
        echo 'in_array(keys)?:   '; var_dump(in_array($varname, array_keys($original), true));
        echo 'array_key_exists?: '; var_dump(array_key_exists($varname, $original));
        echo 'isset[]?:          '; var_dump(isset($original[$varname]));
        echo 'access: '; var_dump($original[$varname]);
        echo "\n";
    }
})();

Output for git.master, git.master_jit, rfc.property-hooks: original: array(2) { ["42"]=> int(42) ["1"]=> bool(true) } combined: array(2) { [42]=> int(42) [1]=> bool(true) } original keys: array(2) { [0]=> string(2) "42" [1]=> string(1) "1" } combined keys: array(2) { [0]=> int(42) [1]=> int(1) } key-intersection: array(0) { } varname: string(2) "42" in_array(keys)?: bool(true) array_key_exists?: bool(false) isset[]?: bool(false) access: Warning: Undefined array key 42 in /in/a67Ka on line 23 NULL varname: string(1) "1" in_array(keys)?: bool(true) array_key_exists?: bool(false) isset[]?: bool(false) access: Warning: Undefined array key 1 in /in/a67Ka on line 23 NULL

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

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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

136.47 ms | 407 KiB | 5 Q