3v4l.org

run code in 300+ PHP versions simultaneously
<?php // fr Nikita's RFC class DataContainer implements IteratorAggregate { protected $data; public function __construct(array $data) { $this->data = $data; } public function &getIterator() { foreach ($this->data as $key => &$value) { yield $key => $value; } } } $dataContainer = new DataContainer([1, 2, 3]); foreach (array_keys($dataContainer) as $key => $value) { $dataContainer[$key] = ($value * -1); } // $this->data is now [-1, -2, -3]
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of & DataContainer::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/rFo41 on line 11 Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, DataContainer given in /in/rFo41:19 Stack trace: #0 /in/rFo41(19): array_keys(Object(DataContainer)) #1 {main} thrown in /in/rFo41 on line 19
Process exited with code 255.

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

preferences:
41.01 ms | 402 KiB | 8 Q