如何通过file_get_html设置Cookie？获取对应国家定价数据求助

Yes, you can absolutely work around this issue to get the correct region-specific pricing! The problem is that file_get_html (from the Simple HTML DOM Parser) doesn’t have a built-in cookie setter, but we can inject cookies into the request using PHP’s stream contexts or switch to cURL for more control. Here’s your step-by-step guide:

1. Identify the Required Cookie #

First, you need to know exactly what cookie the site sets when you select a country. Do this in your browser:

• Go to the site, select your desired country, and let the page reload.
• Open your browser’s DevTools (F12), go to the Application tab, then expand Cookies for the site.
• Look for cookies related to country/region (e.g., country_code, region, currency). Note their names and values (e.g., country_code=DE for Germany).

2. Use Stream Contexts with file_get_html #

You can pass a custom stream context to file_get_html that includes the Cookie header. Here’s an example:

// Replace with your actual cookie data from DevTools
$cookieString = "country_code=US; currency=USD";

// Create a stream context with the Cookie header
$context = stream_context_create([
    'http' => [
        'header' => "Cookie: $cookieString\r\n"
    ]
]);

// Fetch the HTML with the custom cookie
$html = file_get_html('https://your-target-site.com/pricing', false, $context);

// Now parse the country-specific pricing as usual
if ($html) {
    // Replace with your actual selector for price elements
    $priceElements = $html->find('.product-price');
    foreach ($priceElements as $price) {
        echo "Price: " . $price->plaintext . "<br>";
    }
}

3. Alternative: Use cURL (More Reliable for Session Handling) #

If the site requires you to first submit a country selection form (instead of just setting a cookie directly), cURL is better because it can handle session cookies automatically. Here’s how to do it:

// Step 1: Submit the country selection form to get the session cookie
$ch = curl_init('https://your-target-site.com/set-country');
curl_setopt($ch, CURLOPT_POST, true);
// Replace with the form fields the site uses (check DevTools > Network tab)
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
    'country' => 'CA',
    'submit' => 'Select'
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'temp_cookies.txt'); // Save cookies to a temp file
curl_exec($ch);
curl_close($ch);

// Step 2: Fetch the pricing page using the saved cookies
$ch = curl_init('https://your-target-site.com/pricing');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'temp_cookies.txt'); // Load the saved cookies
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$htmlContent = curl_exec($ch);
curl_close($ch);

// Load the HTML into Simple HTML DOM for parsing
$html = str_get_html($htmlContent);

// Parse the prices
if ($html) {
    $price = $html->find('.main-price', 0)->plaintext;
    echo "Canada-specific price: $price";
}

// Clean up the temp cookie file
unlink('temp_cookies.txt');

Key Notes #

• Always make sure the cookie values match exactly what the site uses (case-sensitive!).
• Some sites might use multiple cookies (e.g., one for country, one for currency), so include all relevant ones in the header.
• If the site uses JavaScript to set cookies, you might need to use a headless browser tool like Puppeteer, but most pricing sites rely on server-side cookie checks which the above methods handle.

内容的提问来源于stack exchange，提问作者MUHSIN MOHAMED PC