Emoji Encoding Guide: Unicode, UTF-8, and MySQL utf8mb4
Emojis above U+FFFF require UTF-8 4-byte encoding and MySQL utf8mb4. Learn how to correctly store, transmit, and display emoji in databases and APIs.
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Tags: encoding, unicode, emoji
Emoji Encoding Guide: Unicode Code Points, UTF-8 Bytes, and MySQL utf8mb4 Emoji are Unicode characters. They follow the same encoding rules as any other character — but they live in a range of the Unicode standard that breaks older software, MySQL databases, and naive string operations in almost every language. This guide explains exactly what's happening at the byte level, and what you need to fix when emoji break your stack. --- Emoji Are Code Points Above U+FFFF The first 65,536 Unicode code points (U+0000–U+FFFF) form the Basic Multilingual Plane (BMP). Almost every character in common use — Latin, Cyrillic, Greek, Arabic, Hebrew, Chinese, Japanese, Korean — lives here. Emoji mostly live in the Supplementary Multilingual Plane (Plane 1), specifically: U+1F300–U+1F9FF: Miscellaneous…
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