diff --git a/src/Php/Translator.php b/src/Php/Translator.php
index ff238b82..1ad3b58f 100644
--- a/src/Php/Translator.php
+++ b/src/Php/Translator.php
@@ -523,6 +523,27 @@ class Translator extends Preprocessor
         return $scanner->scan();
     }
 
+    protected function genUpdateClassConstants(): string
+    {
+        $code = '';
+        foreach ($this->classes as $classDef) :
+            foreach ($classDef->constants as $constant) :
+                if ($constant->type === self::TYPE_ARRAY) :
+                    $constName = self::PREFIX . $this->getNativeName($constant->name, $classDef->namespace, $classDef->name);
+                    $code .= $constName . " = " . $constant->value . ";\n";
+                    if (false) {
+                        $code .= "do {\n";
+                        $code .= "auto c = (zend_class_constant *) zend_hash_str_find_ptr(&" . $this->getClassCe($classDef) . "->constants_table, ZEND_STRL(\"" . $constant->name . "\"));";
+                        $code .= "c->type = (zend_type) ZEND_TYPE_INIT_MASK(MAY_BE_ARRAY);\n";
+                        $code .= "ZVAL_COPY(&c->value, $constName.ptr());\n";
+                        $code .= " } while (0); \n";
+                    }
+                endif;
+            endforeach;
+        endforeach;
+        return $code;
+    }
+
     protected function parseProjectYaml(string $path): array
     {
         $cfg        = Yaml::parseFile($path);
diff --git a/src/template/extension.cc.php b/src/template/extension.cc.php
index 07e8c0d0..b1ffb468 100644
--- a/src/template/extension.cc.php
+++ b/src/template/extension.cc.php
@@ -178,16 +178,7 @@ endforeach;
 ?>
 
     // class array constants
-<?php
-foreach ($this->classes as $classDef) :
-    foreach ($classDef->constants as $constant) :
-        if ($constant->type === Translator::TYPE_ARRAY) :
-            $constName = Translator::PREFIX . $this->getNativeName($constant->name, $classDef->namespace, $classDef->name);
-            echo $constName . " = " . $constant->value . ";\n";
-        endif;
-    endforeach;
-endforeach;
-?>
+    <?=$this->genUpdateClassConstants();?>
 }
 
 void php_app_clean() {