MFB fix for #41034

add missing tests

ext/json/json.c

@@ -176,7 +176,7 @@ static void json_encode_array(smart_str *buf, zval **val TSRMLS_DC) /* {{{ */
                 } else if (r == 1) {
                     if (i == HASH_KEY_IS_STRING ||
 						i == HASH_KEY_IS_UNICODE) {
-                        if (key.s[0] == '\0') {
+                        if (key.s[0] == '\0' && Z_TYPE_PP(val) == IS_OBJECT) {
                             /* Skip protected and private members. */
                             continue;
                         }

ext/json/tests/002.phpt

@@ -21,7 +21,7 @@ echo "Done\n";
 string(2) """"
 string(4) "null"
 string(4) "true"
-string(2) "{}"
+string(7) "{"":""}"
 string(5) "[[1]]"
 string(1) "1"
 string(38) ""\u0440\u0443\u0441\u0441\u0438\u0448""

ext/json/tests/bug41034.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Bug #41034 (json_encode() ignores null byte started keys in arrays)
+--SKIPIF--
+<?php if (!extension_loaded("json")) print "skip"; ?>
+--FILE--
+<?php
+echo json_encode(array(0,"\0ab"=>1,"\0null-prefixed value"));
+echo "\nDone\n";
+?>
+--EXPECT--
+{"0":0,"\u0000ab":1,"1":"\u0000null-prefixed value"}
+Done

ext/json/tests/bug41067.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Bug #41067 (json_encode() problem with UTF-16 input)
+--SKIPIF--
+<?php if (!extension_loaded("json")) print "skip"; ?>
+--FILE--
+<?php
+
+$single_barline = "\360\235\204\200";
+$array = array($single_barline);
+var_dump(bin2hex((binary)$single_barline));
+
+$json = json_encode($array);
+$json_decoded = json_decode($json, true);
+
+var_dump(bin2hex((binary)$json_decoded[0]));
+
+?>
+--EXPECT--
+string(8) "f09d8480"
+string(8) "f09d8480"
+--UEXPECT--
+unicode(8) "f09d8480"
+unicode(8) "f09d8480"