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The use scope for magic quotes was expanded in PHP 3. 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 ...
This allows PHP to perform string interpolation in double quoted strings, where backslash is supported as an escape character. No escaping or interpolation is done on strings delimited by single quotes. PHP also supports a C-like sprintf function. Code can be modularized into functions defined with keyword function.
Fields containing a line-break, double-quote or commas should be quoted. (If they are not, the file will likely be impossible to process correctly.) If double-quotes are used to enclose fields, then a double-quote in a field must be represented by two double-quote characters. The format can be processed by most programs that claim to read CSV ...
Suppose we had to make a quote inside the quoted interpreted code. In JavaScript, you can only have one unescaped quote sublevel, which has to be the alternate of the top-level quote. If the 2nd-level quote symbol is the same as the first-level symbol, these quotes must be escaped. [2] For example:
Double quotes are not officially named in Lojban, but sometimes called lubu, following the same pattern as vowel letters, e.g. a = abu: Lojban uses the words lu and li’u, rather than punctuation, to surround quotes of grammatically correct Lojban. [49] Double quotes can also be used for aesthetic purposes.
The backslash (\) escape character typically provides two ways to include double-quotes inside a string literal, either by modifying the meaning of the double-quote character embedded in the string (\" becomes "), or by modifying the meaning of a sequence of characters including the hexadecimal value of a double-quote character (\x22 becomes ").
The delimiters around the tag have the same effect within the here doc as they would in a regular string literal: For example, using double quotes around the tag allows variables to be interpolated, but using single quotes doesn't, and using the tag without either behaves like double quotes. Using backticks as the delimiters around the tag runs ...
The use of the triple-quotes to comment-out lines of source, does not actually form a comment. [19] The enclosed text becomes a string literal, which Python usually ignores (except when it is the first statement in the body of a module, class or function; see docstring). Elixir