嘿，伙计们，我正在尝试验证codeigniter中的captcha代码。有没有一种简单的方法来验证captcha？这是我的代码，它不起作用，因为每次加载页面时，它都会调用一个新的captcha来替换会话中的单词。
public function index() {
$originalString = array_merge(range(0,9), range('a','z'), range('A', 'Z'));
$originalString = implode("", $originalString);
$captcha = substr(str_shuffle($originalString), 0, 6);
$vals = array(
'word' => $captcha,
'img_path' => './captcha/',
'img_url' => base_url().'captcha/',
'font_path' => './system/fonts/texb.ttf',
'img_width' => 150,
'img_height' => 50,
'expiration' => 7200 );
$cap = create_captcha($vals);
$captchaImage = $cap['image'];
$this->session->set_userdata($cap);
if(isset($_POST['register'])) {
$this->form_validation->set_rules('firstName', 'First Name', 'required');
$this->form_validation->set_rules('lastName', 'Last Name', 'required');
$this->form_validation->set_rules('emailAddress', 'Email', 'required|valid_email');
$this->form_validation->set_rules('username', 'Username', 'required|min_length[6]');
$this->form_validation->set_rules('password', 'Password', 'required|matches[confirm-password]|min_length[6]');
$this->form_validation->set_rules('confirm-password', 'Password Confirm', 'required');
$this->form_validation->set_rules('secretquestion', 'Secret Question', 'required');
$this->form_validation->set_rules('answer', 'Answer', 'required');
$this->form_validation->set_rules('inputCode', 'Captcha', 'required|');
if ($this->form_validation->run() == TRUE) {
$user = $this->Account_Model->validation($_POST['username']);
if($_POST['inputCode'] != $this->session->userdata('word')){
echo $_POST['inputCode'] .' = ' .$this->session->userdata('word');
$this->_error = 'Code does not match the image';
} else {
if(empty($user)) {
$this->load->library('upload');
$accountId = $this->Account_Model->addUser($_POST);
$config['upload_path'] = './assets/uploads/avatars';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '100';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$config['file_name'] = $_POST['username'];
$this->upload->initialize($config);
$this->load->library('upload', $config);
if ( !$this->upload->do_upload('avatar'))
{
$error = array('error' => $this->upload->display_errors());
}
if($accountId){
$this->_body = array(
'username' => $_POST['username'],
'email' => $_POST['emailAddress'],
'secretQuestion' => $_POST['secretquestion'],
'answer' => $_POST['answer'],
'captchaImage' => $captchaImage
);
$this->_template = 'register_success';
return $this->_renderPage();
}
}
}
}
}
$this->_body = array(
'secretQuestions' => $this->questions,
'captchaImage' => $captchaImage,
'error' => $this->_error
);
return $this->_renderPage();
}
有更好的方法吗？？。。请帮忙。。tnx处于高级状态。。
也许最简单的方法是在用户提交表单后不创建新的captcha，或者至少不更新会话。
if(!$_POST){
$this->session->set_userdata($cap);
}