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<?php error_reporting(E_ALL);class RefArray implements ArrayAccess { public $array; public function &offsetGet($key) { return $this->array[$key]; } public function offsetSet($key, $value) { $this->array[$key] = $value; } public function offsetExists($key) { return isset($this->array[$key]); } public function offsetUnset($key) { unset($this->array[$key]); }}$obj = new stdClass;$obj->prop1 = 'abc';$obj->prop2 =& $obj->prop1;$obj->prop2 .= 'xyz';var_dump($obj->prop1);$obj->prop3 = 1;$obj->prop4 =& $obj->prop3;++$obj->prop4;var_dump($obj->prop3);$arr = new RefArray;$arr[0] = 'abc';$arr[1] =& $arr[0];$arr[1] .= 'xyz';var_dump($arr[0]);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of RefArray::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ysm4a on line 1 Deprecated: Return type of & RefArray::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ysm4a on line 1 Deprecated: Return type of RefArray::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ysm4a on line 1 Deprecated: Return type of RefArray::offsetUnset($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/Ysm4a on line 1 string(6) "abcxyz" int(2) Fatal error: Uncaught Error: Cannot assign by reference to an array dimension of an object in /in/Ysm4a:1 Stack trace: #0 {main} thrown in /in/Ysm4a on line 1
Process exited with code 255.

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