title: How to up-scale an image {PHP}
body: <p>I used the code below to get an image:</p>
  
  <pre><code>$url = "http://maps.googleapis.com/maps/api/staticmap?size=800x600&amp;zoom=12&amp;center=(10.763705518561297,106.64444580078126)";
  $content = file_get_contents($url);
  </code></pre>
  
  <p>I received a 640px x 640px image meanwhile I expected a 800px x 600px one. How do I scale that image to 800px x 600px?</p>