This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F49F offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “heart decoration” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: 143, decoration, emotion, heart, hearth, purple, white.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 💟︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
As a common symbol throughout typographic history, the heart shape has found its way into many character sets and encodings, including those of Unicode. Some characters depict the shape directly, others reference it in a more derived manner.
Representations
System
Representation (click value to copy)
Nº
128159
UTF-8
F0 9F 92 9F
UTF-16
D8 3D DC 9F
UTF-32
00 01 F4 9F
URL-Quoted
%F0%9F%92%9F
HTML hex reference
💟
Wrong windows-1252 Mojibake
💟
Encoding: GB18030 (hex bytes)
94 39 D9 33
RFC 5137
\u'1F49F'
Bash and Zsh inside echo -e
\U0001F49F
C and C++
\U0001F49F
C#
\U0001F49F
CSS
\01F49F
Excel
=UNICHAR(128159)
Go
\U0001F49F
JavaScript
\uD83D\uDC9F
Modern JavaScript since ES6
\u{1f49f}
JSON
\uD83D\uDC9F
Java
\uD83D\uDC9F
Lua
\u{1F49F}
Matlab
char(128159)
Perl
"\x{1F49F}"
PHP
\u{1f49f}
PostgreSQL
U&'\+01F49F'
PowerShell
`u{1F49F}
Python
\U0001F49F
Ruby
\u{1f49f}
Rust
\u{1f49f}
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