ading an example

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@143884 c90b9560-bf6c-de11-be94-00142212c4b1

reference/image/functions/imagepolygon.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.5 $ -->
+<!-- $Revision: 1.6 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.2 -->
   <refentry id="function.imagepolygon">
    <refnamediv>
@@ -22,6 +22,40 @@
      = x1, points[3] = y1, etc.  <parameter>num_points</parameter> is
      the total number of points (vertices).
     </para>
+    <para>
+     <example>
+      <title><function>imagepolygon</function> example</title>
+      <programlisting role="php">
+<![CDATA[
+<?php
+// create a blank image
+$image = imagecreate(400,300);
+
+// fill the background color
+$bg = imagecolorallocate($image,0,0,0);
+
+// choose a color for the polygon
+$col_poly = imagecolorallocate($image,255,255,255);
+
+// draw the polygon
+imagepolygon($image, 
+             array (
+                    0, 0,
+                    100, 200,
+                    300, 200
+             ),
+             3,
+             $col_poly);
+
+// output the picture
+header("Content-type: image/png");
+imagepng($image);
+
+?>
+]]>
+      </programlisting>
+     </example>
+    </para>
     <para>
      See also <function>imagecreate</function> and
      <function>imagecreatetruecolor</function>.