3v4l.org

run code in 300+ PHP versions simultaneously
<?php $asdf = new stdClass(); $asdf->foo = 'foo'; $bar = [[$asdf], $asdf, 'baz']; $iter = new RecursiveIteratorIterator(new RecursiveArrayIterator($bar)); foreach ($iter as $item) { echo $item, "\n"; }
Output for 8.5.0 - 8.5.3
Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in /in/stLo9 on line 10 foo Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in /in/stLo9 on line 10 foo baz
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
foo foo baz
preferences:
90.82 ms | 2274 KiB | 4 Q