title: Make PNG Image with PHP
body: <p>I am searching if we can make PNG Image with php. </p>
  
  <pre><code>$image = imagecreatetruecolor(100,100);
  $black = imagecolorallocate($image,0,0,0);
  imagefill($image,0,0,$black);
  </code></pre>
  
  <p>This would create 100 X 100 black image. 
  But, I want to create 100 X 100 image with no background, i.e 100 X 100 transparent Image.</p>
  
  <p>Thanks in advance</p>