StringReplace/StringRegExpReplace function problem

Hi coders,
Hi Melba23 ,

I have got a string (a href) "index.php?app=core&module=global"
all I need to do is assign php variables to autoit variables like
 

$app = "core"
$module = "global"

To get rid of string parts which I don't need, I tried to use function StringRegExpReplace but I got the following issue (as seen below the code):

StringRegExpReplace($sInput, "index.php?", "")

this should replace "index.php?" with nothing, but there is a logical operator "?" which remains untouched by the function.
 

I didn't find any help about ignoring logical operators so I tried some things and I found that [?] makes ? ignore.

StringRegExpReplace($sInput, "index.php[?]", "")

so this works (the function returns "" (nothing), that's what I need)

Is that the right way to do it, though?