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Single quotes, double quotes, backslashes and null characters in all user-supplied data all have a backslash prepended to them before being passed to the script in the $_GET, $_REQUEST, $_POST and $_COOKIE global variables. Developers can then in theory use string concatenation to construct safe SQL queries with data provided by the user.
An identifier may not be equal to a reserved keyword, unless it is a delimited identifier. Delimited identifiers means identifiers enclosed in double quotation marks. They can contain characters normally not supported in SQL identifiers, and they can be identical to a reserved word, e.g. a column named YEAR is specified as "YEAR".
Single Character Intro Introducer SCI U+009B 155 0302 0233: ... Quotation mark: 0003 U+0023 # 35 043 Number sign, Hash, Octothorpe, Sharp: 0004 U+0024 $ 36 044
The Unicode character ’ (U+2019 RIGHT SINGLE QUOTATION MARK) is used for both a typographic apostrophe and a single right (closing) quotation mark. [1] This is due to the many fonts and character sets (such as CP1252) that unified the characters into a single code point, and the difficulty of software distinguishing which character is intended by a user's typing. [2]
Contemporary Bulgarian employs the em dash or the quotation dash (the horizontal bar) followed by a space character at the beginning of each direct-speech segment by a different character in order to mark direct speech in prose and in most journalistic question and answer interviews; in such cases, the use of standard quotation marks is left ...
Closing bracket characters Pi: Punctuation, initial quote: Graphic: Character: 12: Opening quotation mark. Does not include the ASCII "neutral" quotation mark. May behave like Ps or Pe depending on usage Pf: Punctuation, final quote: Graphic: Character: 10: Closing quotation mark. May behave like Ps or Pe depending on usage Pc: Punctuation ...
U+00AB « LEFT-POINTING DOUBLE ANGLE QUOTATION MARK; U+00BB » RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK; U+2039 ‹ SINGLE LEFT-POINTING ANGLE QUOTATION MARK; U+203A › SINGLE RIGHT-POINTING ANGLE QUOTATION MARK; Despite their names, the characters are mirrored when used in right-to-left contexts.
In English writing, quotation marks or inverted commas, also known informally as quotes, talking marks, [1] [2] speech marks, [3] quote marks, quotemarks or speechmarks, are punctuation marks placed on either side of a word or phrase in order to identify it as a quotation, direct speech or a literal title or name.