Mark text in HTML

Question

I have some plain text and html. I need to create a PHP method that will return the same html, but with before any instances of th

Answer 1

Taken from http://www.php.net/manual/en/function.preg-quote.php

$textbody = "This book is very difficult to find.";
$word = "very";
$textbody = preg_replace ("/" . preg_quote($word) . "/",
                          "" . $word . "",
                          $textbody);