Question

I have a little problem with preg_replace.

I need a function that removes all characters except [A-z][0-9] and .!?.

I could use preg_match, but this only verifies the string, and I want to remove the characters.

This is so I don’t end up putting junk characters like <p> and ;[[;[p;[
in the description META tag.

So the function must do this:

;")<br>kk23?! → brkk23?!

Any help would be appreciated 😀

Answer 1

$string = ';")<br>kk23?!'; 
$new_string = preg_replace("/[^A-Za-z0-9.!?]/",'',$string);
echo $new_string;

Leaves: letters, numbers, spaces, .!?

---

/* 3 choices. Pick one you like! */
$str = preg_replace("/[^A-Za-z0-9.!? ]/","",$str);
$str = preg_replace("/[^A-Za-z0-9.!?\s]/","",$str);
$str = preg_replace("/[^A-Za-z0-9.!?[:space:]]/","",$str);