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<?php class Foo implements ArrayAccess { protected $array; public function offsetExists($key) { } public function offsetGet($key) { } public function offsetSet($key, $value) { } public function offsetUnset($key) {} } $foo = new Foo; $foo['bar'] = 'bar'; var_dump($foo['bar']);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Foo::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/G1jds on line 8 Deprecated: Return type of Foo::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/G1jds on line 12 Deprecated: Return type of Foo::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/G1jds on line 16 Deprecated: Return type of Foo::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/G1jds on line 20 NULL

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