网站PHP Google News阅读器问题：图片不显示及仅保留主标题首源文章

Hey there! Let’s work through both of your problems with straightforward, actionable fixes:

1. Troubleshooting Missing Images #

Images failing to load typically boils down to one of these common issues:

• Relative URL Paths: If your scraper pulls partial image URLs (like /images/xyz.jpg instead of the full https://news.google.com/images/xyz.jpg), your browser can’t resolve them. Double-check that your code prepends the Google News base URL to any image sources you extract.
• Hotlink Protection: Google blocks direct embedding of their images from external sites. To bypass this, proxy images through your server using PHP:

  function proxy_google_image($image_url) {
      $curl = curl_init($image_url);
      curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
      curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
      $image_data = curl_exec($curl);
      curl_close($curl);
      return 'data:image/jpeg;base64,' . base64_encode($image_data);
  }
  

  Use this function to output images as base64 strings in your <img> tags (e.g., <img src="<?php echo proxy_google_image($img_url); ?>">).
• Incorrect Selector: Ensure your scraping logic targets the right HTML element for images. Google News uses specific classes for article thumbnails—verify your selector (like $article->find('img.tvs3Id', 0) if using Simple HTML DOM).

2. Filtering to Keep Only the First Article per Main Title #

To retain just the first source article for each unique headline, track titles as you process results:

Here’s a practical implementation:

$seen_titles = [];
$unique_articles = [];

// Assume $raw_articles is your array of fetched Google News entries
foreach ($raw_articles as $article) {
    $main_headline = trim($article['main_title']); // Adjust to match your title extraction method
    
    // Skip if we've already added this headline
    if (!in_array($main_headline, $seen_titles)) {
        $seen_titles[] = $main_headline;
        $unique_articles[] = $article;
        
        // Stop once we have 5 unique articles (your desired limit)
        if (count($unique_articles) === 5) {
            break;
        }
    }
}

// Use $unique_articles to render your final list

This code creates a tracker for seen titles, skips duplicates, and stops once you hit your 5-article limit. Just make sure $article['main_title'] targets the core headline (not source-specific subheads).

内容的提问来源于stack exchange，提问作者nickko