Backreferences in text being used in regular expressions.

Sometimes I have $1 in text, which are being parsed by regular expressions. The regular expressions are taking the $1 in the text literally. e.g.


$text = "$1 cookie.";
$replace = "cookie from $2.";
$text = preg_replace("/cookie/i", $replace, $text);

print $text;


Text will output "$1 cookie from ..". How can I avoid this?

Figured it out:


while (preg_match($pattern, $text, $match))
$text = str_replace($match[0], $replacement, $text);