How to get array key from corresponding array value?

Question

You can easily get an array value by its key like so: $value = array[$key] but what if I have the value and I want its key. What\'s the best way to get it?

Answer 1

No really easy way. Loop through the keys until you find array[$key] == $value

If you do this often, create a reverse array/hash that maps values back to keys. Keep in mind multiple keys may map to a single value.