Is there an exact match str_replace()?

[erikcw]

Is there a way to access an "exact match" find replace function?
Below is the code I've been playing with. However it is proding the following results:

$find=dog;
$replace=dogg;

OUTPUT doggg.

If I were to tell it to:
$find=e;
$replace=erik;
$words="easy does it"

OUTPUT "erikasy doeriks it"

function findreplace() {
 extract($GLOBALS);
 $find = $_POST['find'];
 $replace = $_POST['replace'];
// use str_ireplace() for case insensitive find replace in php5.
 $words = str_replace($find, $replace, $words);
return $words;
}

Should I be using a different function?

Thanks!

[stuartc1]

Hi,

Hmmm.. it depends on what you mean by 'exact match'. From what you have it is actually an exact match, but it lacks conditions. For example if you want to replace a instances of 'e' but the condition is it must be the first or last character of the string - then you need something more powerful like regular expressions. There are a couple of functions for this, check out [php.net...] for starters (it has other functions listed on this page also).