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run code in 300+ PHP versions simultaneously
<?php $object = new \ArrayObject([], \ArrayObject::ARRAY_AS_PROPS); $foo = 'websocket'; $object->{$foo} = new \ArrayObject([], \ArrayObject::ARRAY_AS_PROPS); $object = &$object->{$foo}; echo 'success';
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.19, 8.3.21 - 8.3.26, 8.4.1 - 8.4.14
success
Output for 8.3.20

Process exited with code 139.
preferences:
67.89 ms | 406 KiB | 5 Q