Why are iPhone Emojis Disappearing in My MySQL Database?

iPhone Emojis in MySQL: Encoding Pitfalls

Challenge:

Developers face the issue of emoticons inserted from iPhone into MySQL tables becoming blank values. Text is successfully inserted, but emoticons are mysteriously truncated.

Solution:

The problem lies in the character encoding used in the MySQL field. iOS emojis often reside in the Unicode table's code points beyond the Basic Multilingual Plane (BMP). MySQL versions prior to 5.5 only support BMP characters in UTF-8 encoding.

To resolve this, switch to MySQL 5.5 and utilize the utf8mb4, utf16, or utf32 character sets for the affected field. Ensure that the connection encoding used to communicate between PHP and MySQL matches this character set.

Alternative for MySQL <5.5:

If MySQL <5.5 is used, consider employing a BLOB data type instead. Although this allows for raw byte storage without character parsing, it compromises the ability to efficiently search or index the text.

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