3v4l.org

run code in 300+ PHP versions simultaneously

@ 2022-05-09T11:00:41Z

<?php

$a = ['p' => ['id' => TRUE]];
$b = ['p' => FALSE];

print "Behaves as expected.\n";
var_dump(array_merge_recursive($a, $b));

print "\n\nOMG internal array pointer shenanigans can affect the results of array_merge_recursive()!\n";
$a['p'][0] = 'SOMETHING, anything!';
unset($a['p'][0]);
var_dump(array_merge_recursive($a, $b));

print "\n\nThis keeps happening…\n";
var_dump(array_merge_recursive($a, $b));

print "\n\n… not even resetting the internal array pointer helps …\n";
reset($a['p']);
var_dump(array_merge_recursive($a, $b));

print "\n\n… nor casting to object, cloning, then back to array …\n";
$a['p'] = (array) clone (object) $a['p'];
var_dump(array_merge_recursive($a, $b));


print "\n\n… only forcefully recreating a copy-by-value of the array by using array_slice().\n";
$a['p'] = array_slice($a['p'], 0);
var_dump(array_merge_recursive($a, $b));

Output for git.master, git.master_jit, rfc.property-hooks: Behaves as expected. array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [0]=> bool(false) } } OMG internal array pointer shenanigans can affect the results of array_merge_recursive()! array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [1]=> bool(false) } } This keeps happening… array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [1]=> bool(false) } } … not even resetting the internal array pointer helps … array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [1]=> bool(false) } } … nor casting to object, cloning, then back to array … array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [1]=> bool(false) } } … only forcefully recreating a copy-by-value of the array by using array_slice(). array(1) { ["p"]=> array(2) { ["id"]=> bool(true) [0]=> bool(false) } }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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

146.11 ms | 408 KiB | 5 Q