Merge branch 'PHP-8.1'

* PHP-8.1:
  Fix GH-8068: mysqli_fetch_object creates inaccessible properties

Author: cmb69

ext/mysqli/mysqli.c

@@ -1139,11 +1139,13 @@ void php_mysqli_fetch_into_hash(INTERNAL_FUNCTION_PARAMETERS, int override_flags
 		ZVAL_COPY_VALUE(&dataset, return_value);
 
 		object_init_ex(return_value, ce);
+		HashTable *prop_table = zend_symtable_to_proptable(Z_ARR(dataset));
+		zval_ptr_dtor(&dataset);
 		if (!ce->default_properties_count && !ce->__set) {
-			Z_OBJ_P(return_value)->properties = Z_ARR(dataset);
+			Z_OBJ_P(return_value)->properties = prop_table;
 		} else {
-			zend_merge_properties(return_value, Z_ARRVAL(dataset));
-			zval_ptr_dtor(&dataset);
+			zend_merge_properties(return_value, prop_table);
+			zend_array_release(prop_table);
 		}
 
 		if (ce->constructor) {

ext/mysqli/tests/gh8068.phpt

@@ -0,0 +1,26 @@
+--TEST--
+GH-8068 (mysqli_fetch_object creates inaccessible properties)
+--EXTENSION--
+mysqli
+--SKIPIF--
+<?php
+require_once 'skipifconnectfailure.inc';
+?>
+--FILE--
+<?php
+require_once "connect.inc";
+mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
+$mysqli = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket);
+$res = $mysqli->query('SELECT 42');
+$obj = $res->fetch_object();
+var_dump(
+    $obj,
+    $obj->{42}
+);
+?>
+--EXPECT--
+object(stdClass)#4 (1) {
+  ["42"]=>
+  string(2) "42"
+}
+string(2) "42"