3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo extends SplFixedArray { public function offsetExists($index) { return parent::offsetExists($index); } } $foo = new Foo(2); $foo[0] = 'bar1'; $foo[1] = 'bar2'; var_dump($foo[0] ?? null); var_dump($foo[1] ?? null); var_dump($foo[2] ?? null);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
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
preferences:
86.24 ms | 408 KiB | 5 Q