This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is a wide version of the glyph Broken Bar. Accordingly, its width in East Asian Text is fullwidth. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+FFE4 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
The vertical bar, |, is a glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular meanings: Sheffer stroke (in logic), pipe, bar, or (literally, the word "or"), vbar, and others.
Representations
System
Representation (click value to copy)
Nº
65508
UTF-8
EF BF A4
UTF-16
FF E4
UTF-32
00 00 FF E4
URL-Quoted
%EF%BF%A4
HTML hex reference
￤
Wrong windows-1252 Mojibake
￤
Encoding: BIG5HKSCS (hex bytes)
C8 CE
Encoding: CP932 (hex bytes)
EE FA
Encoding: GBK (hex bytes)
A9 57
Encoding: GB18030 (hex bytes)
A9 57
RFC 5137
\u'FFE4'
Bash and Zsh inside echo -e
\uFFE4
C and C++
\uFFE4
C#
\uFFE4
CSS
\00FFE4
Excel
=UNICHAR(65508)
Go
\uFFE4
JavaScript
\uFFE4
Modern JavaScript since ES6
\u{ffe4}
JSON
\uFFE4
Java
\uFFE4
Lua
\u{FFE4}
Matlab
char(65508)
Perl
"\x{FFE4}"
PHP
\u{ffe4}
PostgreSQL
U&'\FFE4'
PowerShell
`u{FFE4}
Python
\uFFE4
Ruby
\u{ffe4}
Rust
\u{ffe4}
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