What is utf8mb4?

utf8mb4 : A UTF-8 encoding of the Unicode character set using one to four bytes per character. utf8mb3 : A UTF-8 encoding of the Unicode character set using one to three bytes per character.

How do I change utf8mb4 to utf8?

To solve the problem open the exported SQL file, search and replace the utf8mb4 with utf8 , after that search and replace the utf8mb4_unicode_520_ci with utf8_general_ci . Save the file and import it into your database. After that, change the wp-config. php charset option to utf8 , and the magic starts.

What does the utf8mb4 character set allow for?

Supports BMP and supplementary characters. Requires a maximum of four bytes per multibyte character.

Which is better UTF-8 or utf8mb4?

In Unicode terms, utf8 can only store characters in the Basic Multilingual Plane, while utf8mb4 can store any Unicode character. Unicode isn’t without its problems, but it’s the best option available. utf8mb4 is 100% backwards compatible with utf8.

What is utf8mb4_0900_ai_ci?

What is the meaning of the MySQL collation utf8mb4_0900_ai_ci? uft8mb4 means that each character is stored as a maximum of 4 bytes in the UTF-8 encoding scheme. (The Unicode Collation Algorithm is the method used to compare two Unicode strings that conforms to the requirements of the Unicode Standard).

Is MySQL case-insensitive?

The default collations used by SQL Server and MySQL do not distinguish between upper and lower case letters—they are case-insensitive by default.