问Codeigniter :登录时使用Captcha，始终存储captcha映像
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Stack Overflow用户

提问于 2018-06-14 05:46:14

回答 1查看 531关注 0票数 0

我在登录代码点火器时使用captcha。然而，它在逻辑上工作得很完美，但是每次刷新时，它都会将一个captcha图像存储到文件夹中。有人能建议我如何修改下面的代码，这样它就不会将图像存储在文件夹中。

将每个captcha图像存储在文件夹中将增加多个用户的响应时间。我在谷歌上搜索过，但没有找到任何解决方案。请建议一下。谢谢，下面是我的代码

/*--- CONTROLLER CODE --*/

<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Captcha extends CI_Controller
{
    function __construct() {
        parent::__construct();
        $this->load->library('session');
        $this->load->helper('captcha');
        $this->load->helper('url');
        $this->load->database();
    }

    public function auth()
    {
        $u=$this->input->post('username');
        $p=$this->input->post('password');

        $this->db->where('username', $u);
        $obj=$this->db->get('user_tbl');

        if($obj->num_rows())
        {
            $data=$obj->row_array();
            if($data['password']==$p)
            {
                $inputCaptcha = $this->input->post('captcha');
                $sessCaptcha = $this->session->userdata('captchaCode');
                if($inputCaptcha === $sessCaptcha)
                {
                   // unlink($captcha['filename']); 
                   $this->load->view('afterLoginView');
                }
                else
                {
                    $this->session->set_flashdata('msg', 'Captcha code does not match, please try again. !');
                redirect('captcha'); 
                }
            }
            else
            {
                $this->session->set_flashdata('msg', 'Incorrect Password !');
                redirect('captcha');      
            }
        }
        else
        {
            $this->session->set_flashdata('msg', 'Incorrect Username !');
            redirect('captcha');
        }
    }

    public function index(){

        // Captcha configuration
        $config = array(
            'img_path'      => 'captcha_images/',
            'img_url'       => base_url().'/captcha_images/',
            'font_path'     => 'system/fonts/texb.ttf',
            'img_width'     => '140',
            'img_height'    => 50,
            'word_length'   => 5,
            'font_size'     => 18
        );
        // $captcha = create_captcha($config);
        print_r($captcha = create_captcha($config));


        // Unset previous captcha and set new captcha word
        $this->session->unset_userdata('captchaCode');
        $this->session->set_userdata('captchaCode', $captcha['word']);

        // Pass captcha image to view
        $data['captchaImg'] = $captcha['image'];

        // Load the view
        $this->load->view('captchaview', $data);
    }

    public function refresh(){
        // Captcha configuration
        $config = array(
            'img_path'      => 'captcha_images/',
            'img_url'       => base_url().'/captcha_images/',
            'font_path'     => 'system/fonts/texb.ttf',
            'img_width'     => '140',
            'img_height'    => 50,
            'word_length'   => 5,
            'font_size'     => 18
        );
        $captcha = create_captcha($config);

        // Unset previous captcha and set new captcha word
        $this->session->unset_userdata('captchaCode');
        $this->session->set_userdata('captchaCode',$captcha['word']);

        // Display captcha image
        echo $captcha['image'];
    }
}


/*--- VIEW ----/*

<!DOCTYPE html>
<html>
<head>
    <title>Login with Captcha</title>
    <script type="text/javascript" src="<?php echo base_url('js/jquery.js'); ?>"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <!-- captcha refresh code -->
<script>
$(document).ready(function(){
    $('.refreshCaptcha').on('click', function(){
        $.get('<?php echo site_url().'/captcha/refresh'; ?>', 
        function(data)
        {
            $('#captImg').html(data);
        });
    });
});
</script>
</head>
<body>

<h4>Login Here</h4>
<form action="<?php echo site_url('captcha/auth'); ?>" method="post">
    <table>
        <tr>
            <td>Username</td>
            <td><input type="text" name="username" class="input" placeholder="Email"></td>
        </tr>
        <tr>
            <td>Password</td>
            <td><input type="password" name="password" class="input" placeholder="Password"></td>
        </tr>
        <tr> 
            <td>Enter the code :</td>
            <td> <input type="text" name="captcha" value="" placeholder="Captcha"/></td>
        </tr>
        <tr>
            <td><p id="captImg"><?php  if(isset($captchaImg)){echo $captchaImg; }  ?></p></td>
            <td><p>Can't read the image? click <a href="javascript:void(0);" class="refreshCaptcha">here</a> to refresh.</p></td>
        </tr>
        <tr>
            <td colspan="2" align="center">
                <input type="submit" name="submit" value="SUBMIT" />
            </td>
        </tr>
    </table>    
</form>
<?php echo $this->session->flashdata("msg"); ?>

</body>
</html>

It is always storing images at (captcha_images/) folder.

php

codeigniter

回答 1

Stack Overflow用户

回答已采纳

发布于 2018-06-14 05:55:57

将此'expiration' => 7200添加到$config数组中

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/50850395

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