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run code in 300+ PHP versions simultaneously
<?php class Foo { } abstract class AbstractBase { abstract public function derp(Foo $bar); } class ExtendedFromAbstractBase extends AbstractBase { public function derp($bar) { // but not here } }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Fatal error: Declaration of ExtendedFromAbstractBase::derp($bar) must be compatible with AbstractBase::derp(Foo $bar) in /in/FAi8c on line 14
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Declaration of ExtendedFromAbstractBase::derp() must be compatible with AbstractBase::derp(Foo $bar) in /in/FAi8c on line 14
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Declaration of ExtendedFromAbstractBase::derp() must be compatible with that of AbstractBase::derp() in /in/FAi8c on line 14
Process exited with code 255.

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