This character is a Other Punctuation and is commonly used, that is, in no specific script.
The glyph is a wide version of the glyph Glyph for U+0022Quotation Mark. 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+FF02 offers a line break opportunity at its position, except in some numeric contexts. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
Quotation marks are punctuation marks used in pairs in various writing systems to identify direct speech, a quotation, or a phrase. The pair consists of an opening quotation mark and a closing quotation mark, which may or may not be the same glyph. Quotation marks have a variety of forms in different languages and in different media.
Representations
System
Representation (click value to copy)
Nº
65282
UTF-8
EF BC 82
UTF-16
FF 02
UTF-32
00 00 FF 02
URL-Quoted
%EF%BC%82
HTML hex reference
"
Wrong windows-1252 Mojibake
"
Encoding: BIG5HKSCS (hex bytes)
C8 D0
Encoding: CP932 (hex bytes)
EE FC
Encoding: CP949 (hex bytes)
A3 A2
Encoding: EUC_JIS_2004 (hex bytes)
A2 B0
Encoding: EUC_JISX0213 (hex bytes)
A2 B0
Encoding: EUC_KR (hex bytes)
A3 A2
Encoding: GB2312 (hex bytes)
A3 A2
Encoding: GBK (hex bytes)
A3 A2
Encoding: GB18030 (hex bytes)
A3 A2
Encoding: HZ (hex bytes)
7E 7B 23 22 7E 7D
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 28 43 23 22 1B 28 42
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 28 51 22 30 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 28 4F 22 30 1B 28 42
Encoding: ISO2022_KR (hex bytes)
1B 24 29 43 0E 23 22 0F
Encoding: JOHAB (hex bytes)
DA 32
Encoding: SHIFT_JIS_2004 (hex bytes)
81 AE
Encoding: SHIFT_JISX0213 (hex bytes)
81 AE
Adobe Glyph List
quotedblmonospace
RFC 5137
\u'FF02'
Bash and Zsh inside echo -e
\uFF02
C and C++
\uFF02
C#
\uFF02
CSS
\00FF02
Excel
=UNICHAR(65282)
Go
\uFF02
JavaScript
\uFF02
Modern JavaScript since ES6
\u{ff02}
JSON
\uFF02
Java
\uFF02
Lua
\u{FF02}
Matlab
char(65282)
Perl
"\x{FF02}"
PHP
\u{ff02}
PostgreSQL
U&'\FF02'
PowerShell
`u{FF02}
Python
\uFF02
Ruby
\u{ff02}
Rust
\u{ff02}
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