3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = new \ArrayObject(array('a')); foreach( $arr as $item ); var_dump($arr->getArrayCopy() === array('a'));
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 - 7.1.31, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.22, 8.1.0 - 8.1.9
bool(true)

preferences:
66.24 ms | 421 KiB | 14 Q