ext/spl: Deprecate ArrayObject and ArrayIterator with objects (php#19420)

RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_arrayobject_and_arrayiterator_with_objects

This also moves tests into a subfolder.

Author: Girgias

Zend/tests/gc/gc_046.phpt

@@ -20,5 +20,6 @@ $action->filter();
 $action->filter();
 ?>
 DONE
---EXPECT--
+--EXPECTF--
+Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in %s on line %d
 DONE

Zend/tests/type_declarations/typed_properties_113.phpt

@@ -19,7 +19,8 @@ foreach ($obj as $k => &$v) {
 
 var_dump($obj);
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in %s on line %d
 object(A)#1 (1) {
   ["foo"]=>
   &string(2) "42"

Zend/tests/type_declarations/typed_properties_114.phpt

@@ -30,8 +30,11 @@ foreach ($obj as $k => &$v) {
 
 var_dump($obj);
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in %s on line %d
 Cannot assign array to reference held by property A::$foo of type string
+
+Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in %s on line %d
 Cannot assign array to reference held by property A::$foo of type string
 object(A)#1 (1) {
   ["foo"]=>

Zend/tests/type_declarations/typed_properties_115.phpt

@@ -22,7 +22,8 @@ try {
 
 var_dump($obj);
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: ArrayIterator::__construct(): Using an object as a backing array for ArrayIterator is deprecated, as it allows violating class constraints and invariants in %s on line %d
 Cannot acquire reference to readonly property A::$foo
 object(A)#1 (1) {
   ["foo"]=>

ext/spl/spl_array.c

@@ -984,6 +984,12 @@ static void spl_array_set_array(zval *object, spl_array_object *intern, zval *ar
 			}
 		}
 	} else {
+		php_error_docref(NULL, E_DEPRECATED,
+			"Using an object as a backing array for %s is deprecated, as it allows violating class constraints and invariants",
+			instanceof_function(Z_OBJCE_P(object), spl_ce_ArrayIterator) ? "ArrayIterator" : "ArrayObject");
+		if (UNEXPECTED(EG(exception))) {
+			return;
+		}
 		if (Z_OBJ_HT_P(array) == &spl_handler_ArrayObject) {
 			ZVAL_COPY_VALUE(&garbage, &intern->array);
 			if (just_array)	{

ext/spl/tests/ArrayObject__serialize_saves_iterator_class.phpt renamed to ext/spl/tests/ArrayObject/ArrayObject__serialize_saves_iterator_class.phpt

@@ -9,7 +9,8 @@ $c = clone $b;
 var_dump($c);
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: ArrayObject::__construct(): Using an object as a backing array for ArrayObject is deprecated, as it allows violating class constraints and invariants in %s on line %d
 object(ArrayObject)#3 (1) {
   ["storage":"ArrayObject":private]=>
   array(3) {

ext/spl/tests/ArrayObject_clone_other_std_props.phpt renamed to ext/spl/tests/ArrayObject/ArrayObject_clone_other_std_props.phpt

@@ -11,5 +11,7 @@ new ArrayObject(Foo::Bar);
 
 ?>
 --EXPECTF--
+Deprecated: ArrayObject::__construct(): Using an object as a backing array for ArrayObject is deprecated, as it allows violating class constraints and invariants in %s on line %d
+
 Fatal error: Uncaught InvalidArgumentException: Enums are not compatible with ArrayObject in %s:%d
 %a