Documentation

Turnstile sign-in form: wait for catalog data (PHP)

See how the scenario handles the normal sign-in form on the ScrapingCourse demonstration page that includes an additional check.

Choose PHP, paste the complete source from this article and set the run parameters below. The source for this collection is ScrapingCourse. This walkthrough applies to the specified demonstration page.

Example settings

{
  "path": "/login/cf-turnstile",
  "mode": "login",
  "expected": 12
}

path selects the page, mode selects an algorithm branch, and expected sets the control count for this example. It is not a plan limit. When the source dataset changes, check the expected count against it.

How the algorithm works

Set /login/cf-turnstile and mode: login to select this example without changing the shared source.
Open the page in a browser. The call receives auto_captcha; additional access checks remain separate from catalog field extraction.
Extract the demonstration email and password from the page hint and require both values.
Fill #email and #password, then click the form button. The scenario does not target widget coordinates or insert challenge answers manually.
Wait for .product-name:not(:empty), then collect names, prices and image URLs.
Compare the unique product count with expected. Close the browser in finally, including on errors.

Products are processed by courseCollect($ctx, $html, $seen). Read the name first, skip empty names, and use the card link as the key, falling back to the name when necessary. seen prevents the same key being emitted twice. This matters when a later HTML read includes products already collected.

Details that matter

Completion is based on catalog data. Submitting the form alone does not establish that the products were received.

PHP details

PHP calls network and browser methods sequentially with ->. courseCollect receives $seen and returns its updated array, so assign each result back. Close the page in finally; $ctx->fail() stops the run with a readable message.

Expected output

The configured demonstration dataset expects 12 unique records. The final check compares the actual unique key count with expected.

Field	Contents
`name`	Product name with leading and trailing whitespace removed.
`price`	Price converted from text to a number.
`image`	Image URL read from the card src attribute.

Complete scenario source

The source is shared by this collection. This example runs its login branch using the parameters above. Copy the complete block into the PHP editor; no fixed sign-in credentials or service keys need to be added.

<?php

function run(\Sdk\Context $ctx): void
{
    $origin = 'https://www.scrapingcourse.com';
    $path = (string) $ctx->param('path', '/pagination');
    $mode = (string) $ctx->param('mode', 'http');
    $auto = $ctx->param('auto_captcha', true) !== false;
    $seen = [];
    if ($mode === 'http') {
        $url = $origin.$path;
        $visited = [];
        while ($url !== null && count($visited) < 50) {
            if (isset($visited[$url])) {
                $ctx->fail('Pagination returned an already processed page');
            }
            $visited[$url] = true;
            $response = $ctx->http()->withoutCache()->get($url, $auto);
            if (! $response->ok()) {
                $ctx->fail('The source could not be opened: '.$response->status);
            }
            $html = $response->body;
            $seen = courseCollect($ctx, $html, $seen);
            $next = $ctx->dom($html)->attr('a[rel="next"], a.next.page-numbers', 'href');
            $url = $next ? $ctx->url()->absolutize($url, $next) : null;
        }
        if ($url !== null) {
            $ctx->fail('The pagination safety limit was reached');
        }
    } else {
        $page = $ctx->browser()->open($origin.$path, ['*/ajax/products*'], [], $auto);
        try {
            if ($mode === 'login') {
                $dom = $ctx->dom($page->content());
                $hint = '';
                foreach ($dom->qa('p') as $p) {
                    if (str_contains($p->text(), 'Demo Credentials:')) {
                        $hint = $p->text();
                    }
                }
                preg_match('/Password:\s*([^\s|]+)/i', $hint, $password);
                preg_match('/Email:\s*([^\s|]+@[^\s|]+)/i', $hint, $emailMatch);
                $email = $emailMatch[1] ?? '';
                if ($email === '' || ! isset($password[1])) {
                    $ctx->fail('The page does not contain demo credentials');
                }
                $page->type('#email', $email)->type('#password', $password[1])->click('button[type="submit"]');
            }
            if ($mode === 'challenge') {
                $text = preg_replace('/\s+/', ' ', $ctx->dom($page->content())->text('body') ?? '');
                if (! preg_match('/You (?:successfully )?bypassed|successfully bypassed|Congratulations/i', $text)) {
                    $ctx->fail('The expected page content was not received');
                }
                $ctx->emit(['name' => $path, 'passed' => true], $path);
            } else {
                $page->waitFor('.product-name:not(:empty)', 15000);
                if ($mode === 'button') {
                    $complete = false;
                    for ($i = 0; $i < 30; $i++) {
                        $html = $page->content();
                        $before = $ctx->dom($html);
                        $seen = courseCollect($ctx, $html, $seen);
                        $button = $before->q('#load-more-btn');
                        if ($button === null || preg_match('/display:\s*none/', $button->attr('style') ?? '')) {
                            $complete = true;
                            break;
                        }
                        $offset = $button->attr('data-offset');
                        $count = count($before->qa('.product-item'));
                        $page->click('#load-more-btn');
                        $response = $page->waitForResponse('*offset='.$offset, 15000);
                        if ($response === null || ($response['status'] < 200 || $response['status'] >= 300) || $response['truncated'] || $response['error']) {
                            $ctx->fail('The next batch could not be loaded');
                        }
                        if (trim($response['body'] ?? '') === '') {
                            $complete = true;
                            break;
                        }
                        $page->waitFor('.product-item:nth-child('.($count + 1).')');
                    }
                    if (! $complete) {
                        $ctx->fail('The batch loading safety limit was reached');
                    }
                }
                if ($mode === 'scroll') {
                    $stable = 0;
                    $previous = 0;
                    for ($i = 0; $i < 40 && $stable < 3; $i++) {
                        $page->scroll(3, 400);
                        $html = $page->content();
                        $seen = courseCollect($ctx, $html, $seen);
                        $count = count($ctx->dom($html)->qa('.product-item'));
                        $stable = $count === $previous ? $stable + 1 : 0;
                        $previous = $count;
                    }
                    if ($stable < 3) {
                        $ctx->fail('The feed is still loading: increase the scroll limit');
                    }
                }
                $seen = courseCollect($ctx, $page->content(), $seen);
            }
        } finally {
            $page->close();
        }
    }
    $expected = (int) $ctx->param('expected', 1);
    if ($mode !== 'challenge' && count($seen) !== $expected) {
        $ctx->fail('Incomplete result: '.count($seen).' instead of '.$expected);
    }
}

function courseCollect(\Sdk\Context $ctx, string $html, array $seen): array
{
    $dom = $ctx->dom($html);
    foreach ($dom->qa('.product-item, li.product') as $card) {
        $name = trim($card->q('.product-name, .woocommerce-loop-product__title')?->text() ?? '');
        $key = $card->q('a')?->attr('href') ?? $name;
        if ($name === '' || isset($seen[$key])) {
            continue;
        }
        $seen[$key] = true;
        $ctx->emit(['name' => $name, 'price' => $ctx->text()->money($card->q('.product-price, .price')?->text() ?? ''),
            'image' => $card->q('img')?->attr('src') ?? ''], $key);
    }

    return $seen;
}