Question

Which statement will output $x on the screen?

(a) echo “\$x”;

(b) echo “$$x”;

(c) echo “/$x”;

(d) echo “$x;”;

The question was asked in an online interview.

This intriguing question comes from Basics in division Basics of PHP of PHP

Answer 1

Correct answer is (a) echo “\$x”;

The best I can explain: A backslash is used so that the dollar sign is treated as a normal string character rather than prompt PHP to treat $x as a variable. The backslash used in this manner is known as escape character.