Cannot array_unique merged arrays created differently and displays differently

Cannot array_unique merged arrays created differently and displays differently Helpful? Please use the *Thanks* button above! Or, thank me via Patreon: https://www.patreon.com/roelvandepaar! With thanks & praise to God, and with thanks to the many people who have made this project possible! | Content (except music & images) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing | Music: https://www.bensound.com/licensing | Images: https://stocksnap.io/license & others | With thanks to user magicianiam (stackoverflow.com/users/694464), user dynamic (stackoverflow.com/users/496223), and the Stack Exchange Network (stackoverflow.com/questions/10387656). Trademarks are property of their respective owners. Disclaimer: All information is provided "AS IS" without warranty of any kind. You are responsible for your own actions. Please contact me if anything is amiss at Roel D.OT VandePaar A.T gmail.com