codice:
<form method="POST" action="$ENV{'SCRIPT_NAME'}">
<input type="radio" name="presenza" value="3" onclick="this.form.submit();" />
<input type="radio" name="presenza" value="4" onclick="this.form.submit();" />
<input type="radio" name="presenza" value="2" onclick="this.form.submit();" />
</form>