我刚刚在目录上尝试了您的代码，并且稍加调整即可工作.

I have just tried your code on my catalog and it worked with a little adjustement.

您应该注意已加载的商店； 如果当前未加载ADMIN存储库(Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);)，则不允许更新某些产品字段.

You should pay attention to the loaded store; it is not allowed to update certain product fields if the ADMIN store is not the currently loaded (Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);).

<?php

require_once('app/Mage.php');

Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

...

$product->save();
?>