Question

character litrals are enclosed within double quotes _​

Answer 1

Answer:-

A "string literal" is a sequence of characters from the source character set enclosed in double quotation marks (" "). String literals are used to represent a sequence of characters which, taken together, form a null-terminated string. You must always prefix wide-string literals with the letter L.

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Answer 2

Answer:

when you use double quotes PHP has to parse to check if there are any variables within the string. A single-quoted string does not have variables within it interpreted. ... Also, a double-quoted string can contain apostrophes without backslashes, while a single-quoted string can contain unescaped quotation marks