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. The word that U+1F532 forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “black square button” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: black, button, geometric, square.
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 Glyph for U+FE0EVariation Selector-15: 🔲︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
In Euclidean geometry, a square is a regular quadrilateral, which means that it has four straight sides of equal length and four equal angles (90-degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle with two equal-length adjacent sides. It is the only regular polygon whose internal angle, central angle, and external angle are all equal (90°), and whose diagonals are all equal in length. A square with vertices ABCD would be denoted ABCD.
Representations
System
Representation (click value to copy)
Nº
128306
UTF-8
F0 9F 94 B2
UTF-16
D8 3D DD 32
UTF-32
00 01 F5 32
URL-Quoted
%F0%9F%94%B2
HTML hex reference
🔲
Wrong windows-1252 Mojibake
🔲
Encoding: GB18030 (hex bytes)
94 39 E8 30
RFC 5137
\u'1F532'
Bash and Zsh inside echo -e
\U0001F532
C and C++
\U0001F532
C#
\U0001F532
CSS
\01F532
Excel
=UNICHAR(128306)
Go
\U0001F532
JavaScript
\uD83D\uDD32
Modern JavaScript since ES6
\u{1f532}
JSON
\uD83D\uDD32
Java
\uD83D\uDD32
Lua
\u{1F532}
Matlab
char(128306)
Perl
"\x{1F532}"
PHP
\u{1f532}
PostgreSQL
U&'\+01F532'
PowerShell
`u{1F532}
Python
\U0001F532
Ruby
\u{1f532}
Rust
\u{1f532}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)