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<?php class Data implements \ArrayAccess { private $_data; public function __construct($data = []) { $this->_data = $data; } public function offsetExists($offset) { echo 'EXISTS: ' . $offset . PHP_EOL; return isset($this->_data[$offset]); } public function &offsetGet($offset) { echo 'GET: ' . $offset . PHP_EOL; $returnValue = null; if (!isset($this->_data[$offset])) { $this->_data[$offset]=new Data(); //return new ; } $returnValue = &$this->_data[$offset]; return $returnValue; } public function offsetSet($offset, $value) { echo 'SET: ' . $offset . PHP_EOL; var_dump($value); $this->_data[$offset] = $value; } public function offsetUnset($offset) { unset($this->_data[$offset]); } } $data = new Data(); var_dump(isset($data['aaaaa']['bbbbbb']['ccccc'])); $data['aaaaa']['bbbbbb']['ccccc'];//='dddddd'; var_dump($data);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Data::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/LVfi6 on line 13 Deprecated: Return type of & Data::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/LVfi6 on line 19 Deprecated: Return type of Data::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/LVfi6 on line 31 Deprecated: Return type of Data::offsetUnset($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/LVfi6 on line 38 EXISTS: aaaaa bool(false) GET: aaaaa GET: bbbbbb GET: ccccc object(Data)#1 (1) { ["_data":"Data":private]=> array(1) { ["aaaaa"]=> object(Data)#2 (1) { ["_data":"Data":private]=> array(1) { ["bbbbbb"]=> object(Data)#3 (1) { ["_data":"Data":private]=> array(1) { ["ccccc"]=> object(Data)#4 (1) { ["_data":"Data":private]=> array(0) { } } } } } } } }

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