- ZVAL_OBJVAL(return_value, http_message_object_new_ex(http_message_object_ce, msg, NULL));
+ zend_class_entry *ce = http_message_object_ce;
+
+ if (class_name && *class_name) {
+ ce = zend_fetch_class(class_name, class_length, ZEND_FETCH_CLASS_DEFAULT TSRMLS_CC);
+ if (ce && !instanceof_function(ce, http_message_object_ce TSRMLS_CC)) {
+ http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Class %s does not extend HttpMessage", class_name);
+ ce = NULL;
+ }
+ }
+ if (ce) {
+ ZVAL_OBJVAL(return_value, http_message_object_new_ex(ce, msg, NULL));
+ }