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run code in 300+ PHP versions simultaneously
<?php interface ParametersInterface {} class Parameters implements ParametersInterface {} class AbstractPidor { public function play(ParametersInterface $p) {} } class Pidor extends AbstractPidor { public function play(Parameters $p) {} }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Declaration of Pidor::play(Parameters $p) must be compatible with AbstractPidor::play(ParametersInterface $p) in /in/rm6P1 on line 12
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of Pidor::play(Parameters $p) should be compatible with AbstractPidor::play(ParametersInterface $p) in /in/rm6P1 on line 12
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of Pidor::play(Parameters $p) should be compatible with AbstractPidor::play(ParametersInterface $p) in /in/rm6P1 on line 13

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