Make php_v8js_write_property export only public properties

Before a property would have been exported, even if a derived
class declared it either private or protected.

v8js.cc

@@ -1296,12 +1296,16 @@ static void php_v8js_write_property(zval *object, zval *member, zval *value ZEND
 {
 	V8JS_BEGIN_CTX(c, object)
 
-	/* Global PHP JS object */
-	v8::Local<v8::String> object_name_js = v8::Local<v8::String>::New(c->isolate, c->object_name);
-	v8::Local<v8::Object> jsobj = V8JS_GLOBAL->Get(object_name_js)->ToObject();
+	/* Check whether member is public, if so, export to V8. */
+	zend_property_info *property_info = zend_get_property_info(c->std.ce, member, 1 TSRMLS_CC);
+	if(property_info->flags & ZEND_ACC_PUBLIC) {
+		/* Global PHP JS object */
+		v8::Local<v8::String> object_name_js = v8::Local<v8::String>::New(c->isolate, c->object_name);
+		v8::Local<v8::Object> jsobj = V8JS_GLOBAL->Get(object_name_js)->ToObject();
 
-	/* Write value to PHP JS object */
-	jsobj->ForceSet(V8JS_SYML(Z_STRVAL_P(member), Z_STRLEN_P(member)), zval_to_v8js(value, c->isolate TSRMLS_CC), v8::ReadOnly);
+		/* Write value to PHP JS object */
+		jsobj->ForceSet(V8JS_SYML(Z_STRVAL_P(member), Z_STRLEN_P(member)), zval_to_v8js(value, c->isolate TSRMLS_CC), v8::ReadOnly);
+	}
 
 	/* Write value to PHP object */
 	std_object_handlers.write_property(object, member, value ZEND_HASH_KEY_CC TSRMLS_CC);