title: PHP Simple HTML DOM Parser returns blank images
body: <p>I'm using the <code>SimpleHtmlDom</code> library (version 1.5 ($Rev: 196 $)) to parse pages from the <code>Google Play</code> to obtain screenshots. The problem is <strong>sometimes</strong> it returns blank images (<code>data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw</code>) instead of app screenshots (e.g. <code>https://lh3.googleusercontent.com/SLp7-1W6c-LIl5nJkQWrYIb5i7b4XJwdjIox9CtnmRZF_tlWixLSsFo2vzXO6gbbOg</code>). </p>
  
  <p>The code:</p>
  
  <pre><code>include_once('SimpleHtmlDom.php');
  
  $googleplay = 'https://play.google.com/store/apps/details?id=';
  $application = 'com.nolesh.android.livewallpapers.quasar';
  
  $html = $googleplay.$application.'&amp;hl=en_EN';
  
  $html = file_get_html($html);
  
  $screenshots = array();
  foreach($html-&gt;find('button img[itemprop="image"]') as $screenshot){            
      //truncate the size parameter from the end of string (=h310)
      $pos = strpos($screenshot-&gt;src, '=');
      $screenshots[] = substr($screenshot-&gt;src, 0, $pos);   
  }
  </code></pre>
  
  <p>How can I fix this issue?</p>