title: Merge multiple transparent png imagick not working
body: <p>I have created the below code to paste the two images on top of each other however i keep getting a blank screen when i run this code</p>
  <pre><code>enter code here
  $imagick = new Imagick('A-hair.png');
  echo ($imagick);
  // Add another image in the same object
  $imagick-&gt;addImage(new Imagick('a-Collar'));
  // Set the Opacity
  $imagick-&gt;setImageOpacity(1.0);
  // Merge the Layers
  $result = $imagick-&gt;mergeImageLayers(11);
  // Display the image
  header(&quot;Content-Type: image/png&quot;);
  echo $result-&gt;getImageBlob(); 
  </code></pre>
  <p><a href="https://i.stack.imgur.com/hUonA.png" rel="nofollow noreferrer">A-hair.png</a>
  <a href="https://i.stack.imgur.com/yFfPm.png" rel="nofollow noreferrer">a-Collar</a></p>
  <p>I have checked for compatibility and got the message that Imagick is compatible</p>