Replace character with special characters

Question

I have something like this :

$x = "#frac {2} {3}";

I try this code but is doesnt work:

$x = str_replace("#","\"",$x);

I want to replace # with with \\ in this string. But I cant use str_replace.

any help?

Answer 1

You are replacing the # with a "
To use the backslash in a string you need to escape it.
How do you make a string in PHP with a backslash in it?

$x = "#frac {2} {3}";
$x = str_replace("#", "\\", $x);