I am currently using this code to replace $a and $b variables from a template. However I need to make this more dynamic so I do not need to specify the values any more. 
sub prog_replace_string {
    my $replace_this = shift;
    my $with_this  = shift;
    my $string   = shift;

    my $length = length($string);
    my $target = length($replace_this);

    for(my $i=0; $i<$length - $target + 1; $i++) {
        if(substr($string,$i,$target) eq $replace_this) {
            $string = substr($string,0,$i) . $with_this . substr($stri
+ng,$i+$target);
        }
    }
    return $string;
}

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I was wondering how to do replace certain denoted names dynamically in a template file, such as in this context: <b><u><i>$var</i></u></b> and replacing this with the value of $var. I would think this would be possible by using a reference to the regexp match in a regexp like: $string = s/\$XXXXXXXX/${$1}/; Of course this does not work, I do not know what to replace XXXXXXXX with and the $1 variable would return the entire variable name, however we need it without the $ sign. This must be really easy. I would love if someone could help me out without pointing to the use of a module. Thanks a lot!

In reply to Replacing string with regexp without using modules by cowgirl

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