How Can I Store iOS5 Emojis (4-Byte UTF-8 Characters) in MySQL 5.5.10?

Storing UTF-8 MB4 Characters in MySQL

You have encountered an issue storing iOS5 emojis, which require 4-byte coding, in MySQL 5.5.10. This guide will provide solutions to address this problem and ensure proper storage of these characters.

Prerequisites

Ensure that your MySQL configuration has been updated to support UTF-8 MB4 character sets across the database, client, and server. Refer to the provided character set details for confirmation.

Troubleshooting Steps

• Verify that all your database tables' default character sets and text fields have been converted to UTF-8 MB4. Use the following command:

ALTER TABLE mytable charset=utf8mb4, MODIFY COLUMN textfield1 VARCHAR(255) CHARACTER SET utf8mb4, MODIFY COLUMN textfield2 VARCHAR(255) CHARACTER SET utf8mb4;

• Confirm that your application layer is setting the character set for database connections to UTF-8 MB4. Check if the mysql client library version supports UTF-8 MB4, and update or compile it manually if necessary.
• When viewing data using the MySQL client, ensure that the machine supports emoji display and execute the following command before running queries:

SET NAMES utf8mb4;

By verifying these settings and implementing these steps, you should be able to successfully store and display iOS5 emojis in your MySQL database.

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