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run code in 500+ PHP versions simultaneously
<?php abstract class Cl { abstract const FOO; }
Output for 8.3.0 - 8.3.6
Fatal error: Cannot use the abstract modifier on a class constant in /in/q9og4 on line 4
Process exited with code 255.
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.18
Parse error: syntax error, unexpected token ";", expecting "=" in /in/q9og4 on line 4
Process exited with code 255.
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