If Stok = 0 - Hide Price

If Stok = 0 - Hide Price

Hi, I thought I asked this before, but cannot find the thread to see if there is any replies.

If the stock = 0, can the price be hidden?
At the moment I have changed the out of stock option to state "please call for pricing" so at the moment it says,
Please Call For Pricing
£0.00
Which is not so great!

I can edit the php but would need help with it.

Kind Regards,
Matt