RGBA format HEX into RGB format HEX? PHP

Question

I want to convert back and forth between RGBA-formated HEX colors (like0xFF0000FF) and RGB-formated HEX colors (like 0xFF0000) in PHP.

How

Answer 1

As Frank mentioned, you can simply strip the last 2 digits.

The hex format is 3 pairs of numbers, the first pair Red value, the next is Green, and the next is blue. If you add another pair, it's assumed to be the alpha value.