function make_captcha() {
global $settings;
$captcha_string = ""; $captcha_encode = "";
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
for ($i = 0; $i < 5; $i++) {
$captcha_string .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
for ($i = 0; $i < 31; $i++) {
$captcha_encode .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
$result = mysql_query("INSERT INTO ".DB_PREFIX."captcha (captcha_datestamp, captcha_ip, captcha_encode, captcha_string) VALUES('".time()."', '".USER_IP."', '$captcha_encode', '$captcha_string')");
if ($settings['validation_method'] == "image") {
return "\n";
} else {
return "".$captcha_string."\n";
}
}