3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A{ function __construct(){ throw new Exception(); } } try{ $a = new A(); }catch(Exception $e){ echo "caugth the error\n"; } var_dump(isset($a)); // $a is not even set
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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, 8.5.0 - 8.5.3
caugth the error bool(false)

preferences:
104.81 ms | 1827 KiB | 4 Q