Magento检查产品是否有自定义选项并在价格旁边显示文本

I want to check if a product has a custom option applied if it does I want to add "/ half metre" after the price and if it does'tn I want it to say "/ m" how can I do this. What file should I edit? I'm using magento 1.9.2

See example product example product

Just switch on path hints (http://help.sweettoothrewards.com/article/434-how-do-i-turn-on-template-path-hints) and look for template which renders price section. In my case it's frontendwd\default\template\catalog/product/price.phtml

Then add something like

. $_product->getCustomAttribute() == true ? "/ half metre" : ""

To the place where

 echo $_coreHelper->currency($_price ...

located.

Hope it helps.