What’s the difference between utf8 and utf8mb4 in MySQL?
►http://www.eversql.com/mysql-utf8-vs-utf8mb4-whats-the-difference-between-utf8-and-utf8mb4
“If you’re using MySQL in any flavor (MySQL, MariaDB, PerconaDB, etc.), make sure you know your encodings. I would recommend anyone to set the MySQL encoding to utf8mb4. Never use utf8 in MySQL, there is no good reason to do that (unless you like tracing encoding related bugs).”
