Change the characters on the website

[Fraps]

Hi Gusy,
is there any possible to change the characters on the website (online/some single site.php) that I could use some php script?
For exapmle my website shows some È letters.

I would like to convert that (replace the È for C )

Example:
if È then replace for C

[dclamp]

You can use str_replace() for that.

$string = "Èharlie is my friend. hehaheha";

$newstring = str_replace("È", "C", $string);

echo $newstring; // "Charlie is my friend. hehaheha"