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<?php (@WTF == 'WTF') && define('WTF', 'foo'); echo "result of var_dump(WTF):\r\n"; var_dump(WTF);
Output for 8.0.0alpha3 - beta1
Fatal error: Uncaught Error: Undefined constant "WTF" in /in/k8AoT:3 Stack trace: #0 {main} thrown in /in/k8AoT on line 3
Process exited with code 255.
Output for 8.0.0alpha1 - alpha2
Fatal error: Uncaught Error: Undefined constant 'WTF' in /in/k8AoT:3 Stack trace: #0 {main} thrown in /in/k8AoT on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.21, 7.4.0 - 7.4.9
result of var_dump(WTF): string(3) "foo"