valid chararcters

[Davide]

Hi all.

I'm writing a form which only these characters are alloved "a-z 0-9 -
.."
what function help me to do this?

really thanx!

[Juliette]

Davide wrote:

Hi all.

I'm writing a form which only these characters are alloved "a-z 0-9 -
."
what function help me to do this?

really thanx!

When you've received the data validate it with preg_match, something
like this (untested):

if( preg_match( '/^[\.a-zA-Z0-9- ]+$/', $value ) === 1 ) {
// data is valid
}
else {
// data is invalid
}