Check if a key exists in Memcache

Question

How do I check in PHP if a value is stored in Memcache without fetching it? I don\'t like fetching it because the values I have set are all 1MB in size and after I fetch it, I h

Answer 1

I've solved this by using Memcached::append. I try appending value NULL and if it returns TRUE, it means the key exists. If it returns FALSE it means the key doesn't exist. If the key exist it will also put it on top of LRU list.