/* ---------------------------
 * 1688 parser (fully corrected)
 * --------------------------*/
private function parse_1688_product_data($html, $url) {
    libxml_use_internal_errors(true);
    $dom = new DOMDocument();
    @$dom->loadHTML($html);
    $xpath = new DOMXPath($dom);

    $product_data = array(
        'title'         => '',
        'price'         => '0',
        'regular_price' => '0',
        'images'        => array(),
        'description'   => '',
        'sku'           => 'SKU-' . time(),
    );

    // ===== TITLE =====
    $title_selectors = array(
        '//*[@id="productTitle"]//div[contains(@class,"title-content")]/h1',
        "//h1[@data-offer-title]",
        "//h1[contains(@class,'title')]",
        "//meta[@property='og:title']/@content"
    );
    foreach ($title_selectors as $sel) {
        $nodes = $xpath->query($sel);
        if ($nodes->length > 0) {
            $product_data['title'] = ($sel === "//meta[@property='og:title']/@content")
                ? trim($nodes->item(0)->nodeValue)
                : trim($nodes->item(0)->textContent);
            $product_data['title'] = preg_replace('/\s*-\s*1688\.com\s*$/i', '', $product_data['title']);
            if (!empty($product_data['title'])) break;
        }
    }

    // ===== IMAGES =====
    $all_images = array();

    // 1. DOM selectors
    $image_selectors = array(
        '//*[@id="detailImg"]//img',
        '//*[@id="dt-tab"]//img',
        "//img[@data-src]",
        "//img[@src]",
        "//div[contains(@id,'desc-lazyload-container')]//img"
    );
    foreach ($image_selectors as $sel) {
        $nodes = $xpath->query($sel);
        foreach ($nodes as $node) {
            $src = $node->getAttribute('data-src') ?: $node->getAttribute('src');
            if ($src) {
                if (strpos($src, '//') === 0) $src = 'https:' . $src;
                $all_images[] = $this->clean_image_url($src, '1688');
            }
        }
    }

    // 2. Scripts JSON blobs / regex
    $script_nodes = $xpath->query("//script");
    foreach ($script_nodes as $script_node) {
        $sc = $script_node->textContent;

        // JSON arrays
        if (preg_match('/(imageList|imageUrlList|imagePathList)\s*[:=]\s*(\[[^\]]+\])/i', $sc, $m)) {
            $jsonfrag = $m[2];
            $decoded = json_decode($jsonfrag, true);
            if (is_array($decoded)) {
                foreach ($decoded as $u) {
                    if (is_string($u)) {
                        if (strpos($u, '//') === 0) $u = 'https:' . $u;
                        $all_images[] = $this->clean_image_url($u, '1688');
                    } elseif (is_array($u) && isset($u[0])) {
                        $url = $u[0];
                        if (strpos($url, '//') === 0) $url = 'https:' . $url;
                        $all_images[] = $this->clean_image_url($url, '1688');
                    }
                }
            }
        }

        // Fallback regex for any URLs
        if (preg_match_all('/https?:\/\/[^"\'\s]*\.(jpg|jpeg|png|webp)[^"\'\s]*/i', $sc, $m2)) {
            foreach ($m2[0] as $u) {
                if (strpos($u, '//') === 0) $u = 'https:' . $u;
                $all_images[] = $this->clean_image_url($u, '1688');
            }
        }
    }

    // 3. Fallback HTML regex
    if (empty($all_images)) {
        if (preg_match_all('/<img[^>]+src=["\']([^"\']+)["\']/', $html, $matches)) {
            foreach ($matches[1] as $src) {
                if (strpos($src, '//') === 0) $src = 'https:' . $src;
                $all_images[] = $this->clean_image_url($src, '1688');
            }
        }
    }

    $all_images = array_values(array_filter(array_unique($all_images)));
    $product_data['images'] = array_slice($all_images, 0, 20);

    // ===== DESCRIPTION =====
    $desc_selectors = array(
        "//div[contains(@class,'content') and contains(@class,'detail')]",
        "//div[contains(@id,'mod-detail-description')]",
        "//meta[@property='og:description']/@content"
    );
    foreach ($desc_selectors as $sel) {
        $nodes = $xpath->query($sel);
        if ($nodes->length > 0) {
            $product_data['description'] = ($sel === "//meta[@property='og:description']/@content")
                ? trim($nodes->item(0)->nodeValue)
                : trim($nodes->item(0)->textContent);
            if (!empty($product_data['description'])) break;
        }
    }

    // ===== PRICE =====
    $price = '';
    foreach ($script_nodes as $script_node) {
        if (preg_match('/(price|offerPrice|rangePrice)\s*[:=]\s*["\']?([0-9.]+)/i', $script_node->textContent, $m)) {
            $price = $m[2];
            break;
        }
    }
    if (!$price) {
        $price_selectors = array(
            "//span[contains(@class,'price')]",
            "//div[contains(@class,'price')]",
            "//span[contains(@class,'value')]",
            "//em[contains(@class,'price')]"
        );
        foreach ($price_selectors as $sel) {
            $els = $xpath->query($sel);
            if ($els->length) {
                $txt = preg_replace('/[^0-9.]/', '', trim($els->item(0)->textContent));
                if ($txt) { $price = $txt; break; }
            }
        }
    }
    $product_data['price'] = $price ?: '0';
    $product_data['regular_price'] = $product_data['price'];

    libxml_clear_errors();

    if (empty($product_data['title'])) {
        return new WP_Error('parse_error', 'Could not extract product title from 1688.com');
    }

    return $product_data;
}

/* ---------------------------
 * Helper: clean image URLs
 * --------------------------*/
private function clean_image_url($url, $platform) {
    $url = preg_replace('/\?.*$/', '', $url);
    $url = preg_replace('/_\d+x\d+\.(jpg|png|webp|jpeg)$/i', '.$1', $url);
    $url = preg_replace('/_Q\d+\.(jpg|png|webp|jpeg)$/i', '.$1', $url);
    return $url;
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;Shop_40_Core&quot; not found in /var/www/shop40/wp-content/plugins/Shop-40 core/shop-40-core.php:29
Stack trace:
#0 /var/www/shop40/wp-includes/class-wp-hook.php(324): shop_40_core_init()
#1 /var/www/shop40/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters()
#2 /var/www/shop40/wp-includes/plugin.php(517): WP_Hook-&gt;do_action()
#3 /var/www/shop40/wp-settings.php(578): do_action()
#4 /var/www/shop40/wp-config.php(96): require_once('...')
#5 /var/www/shop40/wp-load.php(50): require_once('...')
#6 /var/www/shop40/wp-blog-header.php(13): require_once('...')
#7 /var/www/shop40/index.php(17): require('...')
#8 {main}
  thrown in <b>/var/www/shop40/wp-content/plugins/Shop-40 core/shop-40-core.php</b> on line <b>29</b><br />
<br />
<b>Notice</b>:  Function _load_textdomain_just_in_time was called <strong>incorrectly</strong>. Translation loading for the <code>woocommerce</code> domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the <code>init</code> action or later. Please see <a href="https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 6.7.0.) in <b>/var/www/shop40/wp-includes/functions.php</b> on line <b>6121</b><br />