3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new \ArrayObject(); print_r(get_class($a)); $a = new \ArrayObject(); print_r($a::class);
Output for 8.1.23 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
ArrayObjectArrayObject
Output for 7.4.0 - 7.4.8
Fatal error: Cannot use ::class with dynamic class name in /in/lRG0v on line 9
Process exited with code 255.
Output for 7.2.0 - 7.2.32, 7.3.0 - 7.3.20
Fatal error: Dynamic class names are not allowed in compile-time ::class fetch in /in/lRG0v on line 9
Process exited with code 255.
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