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Should I use utf8 or utf8mb4?

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Should I use utf8 or utf8mb4?

The difference between utf8 and utf8mb4 is that the former can only store 3 byte characters, while the latter can store 4 byte characters. In Unicode terms, utf8 can only store characters in the Basic Multilingual Plane, while utf8mb4 can store any Unicode character.

What does utf8mb4 mean?

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. This character set is deprected in MySQL 8.0, and you should use utfmb4 instead.

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.

How do I convert MySQL to utf8mb4?

Switching from MySQL’s utf8 to utf8mb4

  1. Step 1: Create a backup.
  2. Step 2: Upgrade the MySQL server.
  3. Step 3: Modify databases, tables, and columns.
  4. Step 4: Check the maximum length of columns and index keys.
  5. Step 5: Modify connection, client, and server character sets.
  6. Step 6: Repair and optimize all tables.

Should I use utf8mb4?

If you need a database, don’t use MySQL or MariaDB. Use PostgreSQL. If you need to use MySQL or MariaDB, never use “utf8”. Always use “utf8mb4” when you want UTF-8.

What is difference between utf8mb3 and utf8mb4?

utf8mb3 supports only characters in the Basic Multilingual Plane (BMP). utf8mb4 additionally supports supplementary characters that lie outside the BMP. utf8mb3 uses a maximum of three bytes per character. utf8mb4 uses a maximum of four bytes per character.

Is a UTF 8 character?

UTF-8 (UCS Transformation Format 8) is the World Wide Web’s most common character encoding. Each character is represented by one to four bytes. UTF-8 is backward-compatible with ASCII and can represent any standard Unicode character.

How do I change MySQL from UTF8 to latin1?

Similarly, here’s the command to change character set of MySQL table from latin1 to UTF8. Replace table_name with your database table name. mysql> ALTER TABLE table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci; Hopefully, the above tutorial will help you change database character set to utf8mb4 (UTF-8).

What is default charset utf8mb4?

From MySQL 8.0, utf8mb4 is the default character set, and the default collation for utf8mb4 is utf8mb4_0900_ai_ci. MySQL 8.0 is also coming with a whole new set of Unicode collations for the utf8mb4 character set. This will allow use of the complete Unicode 9.0.

What is the difference between utf8_general_ci and utf8_unicode_ci?

In short: utf8_unicode_ci uses the Unicode Collation Algorithm as defined in the Unicode standards, whereas utf8_general_ci is a more simple sort order which results in “less accurate” sorting results.

Is utf8mb4 backwards compatible?

Also, utf8mb4 is backwards compatible with utf8 .