验证码显示 - Githubissues

手动在根目录下创建captcha文件夹，目录必须可写(666, or 777) ，存放临时生成的验证码，验证码每次请求都会删除过期的图片，expiration

$this->load->helper('url');
$this->load->helper('captcha');
$vals = array(
    'word' => rand(1000,9999),//'Random word',
    'img_path' => './captcha/',
    'img_url' => base_url('captcha/'),
    'img_width' => '150',
    'img_height' => 30,
    'expiration' => 7200
    );

$cap = create_captcha($vals);
echo $cap['image'];

session_start();
$_SESSION['cap']= $cap['word']; // 验证时看$_SESSION['cap']是否和提交的验证码一致即可

baidut / markit

验证码显示 #4