3v4l.org

run code in 500+ PHP versions simultaneously
<?php interface i {} class x extends \Exception implements i {} try { throw new x(); } catch (i $x) { print "Caught!"; }
Output for 5.3.0, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
Caught!
Output for 5.2.0
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/JfE8M on line 5 Caught!
Output for 5.0.0
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/JfE8M on line 5 Fatal error: Uncaught exception 'x' in /in/JfE8M:8 Stack trace: #0 {main} thrown in /in/JfE8M on line 8
Process exited with code 255.
Output for 4.3.0, 4.4.0
Parse error: parse error, unexpected T_STRING in /in/JfE8M on line 3
Process exited with code 255.

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