load->library(’alcaptcha’);
}

function index() {
$this->alcaptcha->generate_code(4);
?>

<?
echo “This is simple form”;
echo form_open(’usingcaptcha/submit’);
echo “Input code:”;
echo “”;
echo “refresh captcha“;
echo form_input(’captchacode’);
echo form_submit(”,’Send’);
echo form_close();
echo ”

$(’#capture’).ajaxForm({
success: function(data) {
$(’#captimage’).attr({src : data});
}
});

function refresh_captcha() {
$(’#randtext’).val(Math.random());
$(’#capture’).submit();
}
“;
}

function submit() {
echo “This is form submit result”;
if ( $this->alcaptcha->check($this->input->post(’captchacode’))) {
echo “Your captcha code is right”;
}else {
echo “Your captcha code is wrong”;
}
}

function captha_img() {
echo $this->alcaptcha->image();
}

function captcha_refresh() {
$this->alcaptcha->generate_code(4);
echo site_url(’captcha/captha_img/’.rand(0,255));
}
}