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<?php class A implements ArrayAccess { public function offsetGet($offset) { echo "get: "; var_dump($offset); return "value"; } public function offsetSet($offset, $value) { echo "set: = $value: "; var_dump($offset); } public function offsetExists($offset) { echo "isset: "; var_dump($offset); return false; } public function offsetUnset($offset) { echo "unset: "; var_dump($offset); } } $a = new A(); var_dump($a[42]); $a[37] = 19; var_dump(isset($a[23])); unset($a[41]);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of A::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/VM5NO on line 12 Deprecated: Return type of A::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/VM5NO on line 3 Deprecated: Return type of A::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/VM5NO on line 8 Deprecated: Return type of A::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/VM5NO on line 17 get: int(42) string(5) "value" set: = 19: int(37) isset: int(23) bool(false) unset: int(41)

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