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run code in 300+ PHP versions simultaneously
<?php interface truc { const OK = 'OK'; } abstract class A implements truc { const OK = 'PAS OK'; } class B extends A { } echo B::OK;
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
PAS OK
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Cannot inherit previously-inherited or override constant OK from interface truc in /in/16Q5O on line 8
Process exited with code 255.
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Cannot inherit previously-inherited or override constant OK from interface truc in /in/16Q5O on line 9
Process exited with code 255.
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