Sting Question

[Namadoor]

I want a function to add re to a string if it isn't there allready.
I have this code:

function Addre($subject)	{
	if (ereg("Re:[[: print:]]+", "$subject")	{
		//Please NOTE: I added a space between the : and p so I wouldn't get a simily.
//do nothing
	}
	else	{
		Global $subject;
		$subject = "Re: $subject";
	}
}

But it doesn't work. How can a make this work?

[examancer]

this should work:

function Addre($subject) {
  if (preg_match("/^re:/i", $subject)) { // if subject already begins with re:
    return $subject;
  } else { // if a "Re:" needs to be added:
    $x = "Re: " . $subject;
	return $x;
  }
}

I used perl compatible patern matching, because its supposed to be faster. I checked the code, and it should work fine.

usage is like this:

$text = "Hello World!";
$text = Addre($text);
// outputs "Re: Hello World!"
echo $text;