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run code in 300+ PHP versions simultaneously
<?php const FOO = $bar;
Output for 8.5.0 - 8.5.3
Fatal error: Constant expression contains invalid operations in /in/fSYWK on line 3 Stack trace: #0 {main}
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: Constant expression contains invalid operations in /in/fSYWK on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '$bar' (T_VARIABLE) in /in/fSYWK on line 3
Process exited with code 255.

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