how to search perl string with special characters?

[michael12]

I can use /[?%.]/ to search the string which contains those character, but how I can search some characters such as "/", "$" etc..., anyone can help me?

 

[Coderifous]

Escape them:

$string = '$100 dollars';

print "matched" if $string =~ /\$/; # -> matched

The backslash before a character tells Perl that the character following the backslash is to be interpreted:
1) as a special character, if it is otherwise normal
2) as a normal character (literal), if it is otherwise special.

If you are matching a bunch of funny characters, use the \Q and \E patter characters like so:

$string =~ /\Q$funny.characters-*&here\E/;

And the funny characters in between the \Q and the \E will be matched literally.

--jim

 

[michael12]

Thanks for your help, it works.

 

[Coderifous]

'welcome.

--jim