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Output for 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
Deprecated: Return type of Foo::offsetExists($index) should either be compatible with SplFixedArray::offsetExists($index): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/5ohF1 on line 5 string(4) "bar1" string(4) "bar2" NULL
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
string(4) "bar1" string(4) "bar2" NULL

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