Altering a inputted message

[craigbabe]

hey I have a site where you can bet on things. But people are cheating in some scripts by betting 100% or 100* or something like that..

If it was called
$bet = 100* ;

how can I alter the string so it only outputs the 100 and not the * ?

[toplay]

You can use ereg and preg functions but the simplest to validate input is a numeric integer is to use:

[a href=\"http://us2.php.net/manual/en/function.ctype-digit.php\" target=\"_blank\"]http://us2.php.net/manual/en/function.ctype-digit.php[/a]

[craigbabe]

So this should work for characters like Â?

if (!ctype_digit($price)) {
exit;
}