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<?php class ArrayObjectChild extends ArrayObject { public function offsetExists($offset) { var_dump('Called: '.__METHOD__); return parent::offsetExists($offset); } public function offsetGet($offset) { var_dump('Called: '.__METHOD__); return parent::offsetGet($offset); } } class ArrayAcessImplementation implements ArrayAccess { private $_array = array(); public function __construct(array $array) { $this->_array = $array; } public function offsetExists($offset) { var_dump('Called: '.__METHOD__); return array_key_exists($offset); } public function offsetGet($offset) { var_dump('Called: '.__METHOD__); return $this->_array($offset); } public function offsetSet($offset, $value) {} public function offsetUnset($offset) {} } $array = array('foo' => ''); // ArrayObject: empty string is set, but empty $object = new ArrayObject($array); var_dump(isset($object['foo']), empty($object['foo'])); // ArrayObject extended: empty string is set, but not empty $object = new ArrayObjectChild($array); var_dump(isset($object['foo']), empty($object['foo'])); // ArrayAccess implemented: empty string is set, but empty $object = new ArrayAcessImplementation($array); var_dump(isset($object['foo']), empty($object['foo']));
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of ArrayObjectChild::offsetExists($offset) should either be compatible with ArrayObject::offsetExists(mixed $key): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/HGPBG on line 5 Deprecated: Return type of ArrayObjectChild::offsetGet($offset) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/HGPBG on line 10 Deprecated: Return type of ArrayAcessImplementation::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/HGPBG on line 25 Deprecated: Return type of ArrayAcessImplementation::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/HGPBG on line 30 Deprecated: Return type of ArrayAcessImplementation::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/HGPBG on line 35 Deprecated: Return type of ArrayAcessImplementation::offsetUnset($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/HGPBG on line 36 bool(true) bool(true) string(38) "Called: ArrayObjectChild::offsetExists" string(38) "Called: ArrayObjectChild::offsetExists" string(35) "Called: ArrayObjectChild::offsetGet" bool(true) bool(true) string(46) "Called: ArrayAcessImplementation::offsetExists" Fatal error: Uncaught ArgumentCountError: array_key_exists() expects exactly 2 arguments, 1 given in /in/HGPBG:27 Stack trace: #0 /in/HGPBG(27): array_key_exists('foo') #1 /in/HGPBG(51): ArrayAcessImplementation->offsetExists('foo') #2 {main} thrown in /in/HGPBG on line 27
Process exited with code 255.

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