Skip to main content

Captcha and session problem in Ajax Form?

The form works fine without captcha, but it only works 1 time when I add captcha. and captcha numbers always stay the same. In ajax form, I want the captcha to be refreshed after every submission, that's why I added it but it's not working either.

img = document.getElementById("capt");

img.src = "captcha.php"

Thank you in advance for your help on how to solve this problem.

index.php

    
    <!DOCTYPE html>
    <head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
    </head>

    <body>
    <form name="checkaddress" id="checkaddress" method="post">
    <input type="text" id="v" value="" name="v"><br>
    <img src="captcha.php" id="capt"> <input type="text" size="10" name="deger" id="deger"> 
    <button type="submit">Enter</button>
    </form> 

    <span class="vertr"></span>
                    
    <script>
    $('#checkaddress').on('submit', function(e) {
        e.preventDefault();
        // get formdata in a variable that is passed to the ajax request
        var dataToPassToAjax = $(this).serialize();
        $.ajax({
            url: "send.php",
            type: "POST",
            data: dataToPassToAjax,
            cache: false,
            success: function(resultHtml) {
                // add the returned data to the .vertr element
                $('.vertr').html(resultHtml).fadeIn('slow');
                $('#v').val('');
                $('#deger').val('')
                img = document.getElementById("capt");
                img.src = "captcha.php"
         }
        });
        // cancel the default form submit
        return false;
    });
    </script>
    </body>

    </html>

send.php:

    <?php 
    session_start();
    if ($_POST['deger'] == $_SESSION['captcha']) {
    $v= $_POST['v'];    
    echo "Hello $v";
    }
    else echo "CAPTCHA Not Detected";
    ?>

capctha.php

    <?PHP

    $image = @imagecreatetruecolor(95, 30) or die("hata oluştu");

    // create the background color
    $background = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
    imagefill($image, 0, 0, $background);
    $linecolor = imagecolorallocate($image, 0xCC, 0xCC, 0xCC);
    $textcolor = imagecolorallocate($image, 0x33, 0x33, 0x33);

    // generate random lines
    for ($i = 0; $i < 2; $i++) {
        imagesetthickness($image, rand(1, 3));
        imageline($image, 0, rand(0, 30), 95, rand(0, 30), $linecolor);
    }

    session_start();

    // generate random numbers
    $sayilar = '';
    for ($x = 15; $x <= 75; $x += 20) {
        $sayilar .= ($sayi = rand(0, 9));
        imagechar($image, rand(3, 5), $x, rand(2, 14), $sayi, $textcolor);
    }

    // we pass the numbers to the session
    $_SESSION['captcha'] = $sayilar;

    // the image is displayed and then deleted
    header('Content-type: image/png');
    imagepng($image);
    imagedestroy($image);
    ?>
Via Active questions tagged javascript - Stack Overflow https://ift.tt/rQnPDdC

Comments

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...