Fix several more memory leak

php/ext/google/protobuf/def.c

@@ -249,6 +249,7 @@ PHP_METHOD(Descriptor, getField) {
     MAKE_STD_ZVAL(field_hashtable_value);
     ZVAL_OBJ(field_hashtable_value, field_descriptor_type->create_object(
                                         field_descriptor_type TSRMLS_CC));
+    Z_DELREF_P(field_hashtable_value);
 #else
     field_hashtable_value =
         field_descriptor_type->create_object(field_descriptor_type TSRMLS_CC);

php/ext/google/protobuf/message.c

@@ -374,7 +374,7 @@ PHP_METHOD(Message, whichOneof) {
                                   LOWER_FIELD)                                 \
   PHP_METHOD(UPPER_CLASS, get##UPPER_FIELD) {                                  \
     zval member;                                                               \
-    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 1);                            \
+    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 0);                            \
     PHP_PROTO_FAKE_SCOPE_BEGIN(LOWER_CLASS##_type);                            \
     zval* value = message_get_property_internal(getThis(), &member TSRMLS_CC); \
     PHP_PROTO_FAKE_SCOPE_END;                                                  \
@@ -387,7 +387,7 @@ PHP_METHOD(Message, whichOneof) {
       return;                                                                  \
     }                                                                          \
     zval member;                                                               \
-    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 1);                            \
+    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 0);                            \
     message_set_property_internal(getThis(), &member, value TSRMLS_CC);        \
     PHP_PROTO_RETVAL_ZVAL(getThis());                                          \
   }
@@ -396,7 +396,7 @@ PHP_METHOD(Message, whichOneof) {
                                         LOWER_FIELD)                           \
   PHP_METHOD(UPPER_CLASS, get##UPPER_FIELD) {                                  \
     zval member;                                                               \
-    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 1);                            \
+    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 0);                            \
     PHP_PROTO_FAKE_SCOPE_BEGIN(LOWER_CLASS##_type);                            \
     message_get_oneof_property_internal(getThis(), &member,                    \
                                         return_value TSRMLS_CC);               \
@@ -409,7 +409,7 @@ PHP_METHOD(Message, whichOneof) {
       return;                                                                  \
     }                                                                          \
     zval member;                                                               \
-    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 1);                            \
+    PHP_PROTO_ZVAL_STRING(&member, LOWER_FIELD, 0);                            \
     message_set_property_internal(getThis(), &member, value TSRMLS_CC);        \
     PHP_PROTO_RETVAL_ZVAL(getThis());                                          \
   }

php/ext/google/protobuf/type_check.c

@@ -532,6 +532,7 @@ void check_map_field(const zend_class_entry* klass, PHP_PROTO_LONG key_type,
       map_field_handlers->write_dimension(
           CACHED_TO_ZVAL_PTR(map_field), &key,
           CACHED_PTR_TO_ZVAL_PTR((CACHED_VALUE*)value) TSRMLS_CC);
+      zval_dtor(&key);
     }
 
     RETURN_ZVAL(CACHED_TO_ZVAL_PTR(map_field), 1, 1);

php/tests/memory_leak_test.php

@@ -106,15 +106,34 @@ $m->mergeFromString(hex2bin('F80601'));
 assert('F80601', bin2hex($m->serializeToString()));
 
 // Test create repeated field via array.
-$str_arr = array();
+$str_arr = array("abc");
 $m = new TestMessage();
 $m->setRepeatedString($str_arr);
 
 // Test create map field via array.
-$str_arr = array();
+$str_arr = array("abc"=>"abc");
 $m = new TestMessage();
 $m->setMapStringString($str_arr);
 
+// Test unset
+$from = new TestMessage();
+TestUtil::setTestMessage($from);
+unset($from);
+
+// Test wellknown
+$from = new \Google\Protobuf\Timestamp();
+$from->setSeconds(1);
+assert(1, $from->getSeconds());
+
+$from = new \Google\Protobuf\Value();
+$from->setNumberValue(1);
+assert(1, $from->getNumberValue());
+
+// Test descriptor
+$pool = \Google\Protobuf\DescriptorPool::getGeneratedPool();
+$desc = $pool->getDescriptorByClassName("\Foo\TestMessage");
+$field = $desc->getField(1);
+
 # $from = new TestMessage();
 # $to = new TestMessage();
 # TestUtil::setTestMessage($from);