PHP ImageMagick on Azure Web Apps

<?xml version="1.0"?>
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <system.webServer>
    <fastCgi>
      <application fullPath="D:\Program Files (x86)\PHP\v5.6\php-cgi.exe" xdt:Locator="Match(fullPath)">       
          <environmentVariables>
                <environmentVariable name="PHPRC" xdt:Locator="Match(name)" value="d:\home\site\php56.ini" xdt:Transform="SetAttributes(value)" />
          </environmentVariables>
      </application>
    </fastCgi>
   
    <runtime xdt:Transform="InsertIfMissing">
      <environmentVariables xdt:Transform="InsertIfMissing">
        <add name="PATH" value="%PATH%d:\home\site\imagick3.1.2\;" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing" />
        <add name="MAGICK_HOME" value="d:\home\site\imagick3.1.2\" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing" />
        <add name="MAGICK_CODER_MODULE_PATH" value="d:\home\site\coders6.9.2\" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing" />
      </environmentVariables>
    </runtime>
  </system.webServer>
</configuration>

<?php
/* Create a new imagick object */
$im = new Imagick();
/* Create new image. This will be used as fill pattern */
$im->newPseudoImage(50, 50, "gradient:red-black");
/* Create imagickdraw object */
$draw = new ImagickDraw();
/* Start a new pattern called "gradient" */
$draw->pushPattern('gradient', 0, 0, 50, 50);
/* Composite the gradient on the pattern */
$draw->composite(Imagick::COMPOSITE_OVER, 0, 0, 50, 50, $im);
/* Close the pattern */
$draw->popPattern();
/* Use the pattern called "gradient" as the fill */
$draw->setFillPatternURL('#gradient');
/* Set font size to 52 */
$draw->setFontSize(52);
/* Annotate some text */
$draw->annotation(20, 50, "Hello World!");
/* Create a new canvas object and a white image */
$canvas = new Imagick();
$canvas->newImage(350, 70, "white");
/* Draw the ImagickDraw on to the canvas */
$canvas->drawImage($draw);
/* 1px black border around the image */
$canvas->borderImage('black', 1, 1);
/* Set the format to PNG */
$canvas->setImageFormat('gif');
/* Output the image */
header("Content-Type: image/gif");
echo $canvas;