regex (in PHP) to match & that aren't HTML entities

Question

Here\'s the goal: to replace all standalone ampersands with & but NOT replace those that are already part of an HTML entity such as  .

I think I nee

Answer 1

You could always run html_entity_decode before you run htmlentities? Works unless you only want to do ampersands (and even then you can play with the charset parameters).

Much easier and faster than a regex.