WP Simple Captcha
ABOUT WP Simple Captcha
lots of robot spam commenters,i really get rid of them,hope it will not cost much.so I write this little plugin to do the work,you can just add these lines of code into your theme's function.php file ,put them before the last:
?> it will just work.
these are the code you should put into your function.php:>
class zxdRoboCheck{
function zxd_robokiller_fields($fields) {
$rnum1 =rand(1,10);
$rnum2 = rand(2,8);
$rnum = $rnum1 + $rnum2;
$fields['robo'] = ' ';
return $fields;
}
function roboCheck($comment){
$userId = get_current_user_id();
if($userId!=0) return($comment);
if (empty($_POST['robo']) || trim($_POST['robo']) == '' ) {
wp_die( __('Error: you are not robot,are you?do the math,fill the blank '));
}
$robo_num1 = (int)$_POST['robo'];
$robo_num2 = (int)$_POST['rnum'];
if ( $robo_num2 == $robo_num1) {
return($comment);
}
else {
wp_die( __('Error: you are not robot,are you?'));
}
}
}
if (class_exists("zxdRoboCheck")) {
$aRoboCheck = new zxdRoboCheck();
add_action('comment_form_default_fields', array(&$aRoboCheck, 'zxd_robokiller_fields'),1);
add_filter('preprocess_comment', array(&$aRoboCheck, 'roboCheck'), 1);
} FAQ
it is simple,so it is easy to crack,if spammers want.lets just hope they do not really have to deal with your site.