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  28  <H2><A NAME="4_6">4.6 Alternatives to streaming back the image</A></H2>
  29  <P> If you like to save the image directly to a file instead of
  30   streaming it back to the browser then you just have to specify an
  31   absolute filename in the final call to Graph::Stroke(), i.e.</P>
  32  <P><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
  33  &nbsp;$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
  34  Stroke</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
  35  &quot;/usr/home/peter/images/result2002.png&quot;</FONT><FONT color="#007700">);</FONT><FONT
  36  color="#0000BB"></FONT></FONT></CODE></DIV></P>
  37  <P></P>
  38  <P> Please note that the user running as Apache/PHP must have write
  39   access to the specified directory.</P>
  40  <P> There are also two predefined filenames which have special meaning.</P>
  41  <UL>
  42  <LI>&quot;auto&quot;, This will create a file in the same directory as the script
  43   with the same name as the script but with the correct image extension.</LI>
  44  <LI>_IMG_HANDLER, (This is defined in jpgraph.php). Specifying this
  45   filename will not create a an image to file or stram it back to the
  46   browser. Instead it will instruct the Stroke() method to just return
  47   the handle for the GD image. This is useful if you later want to
  48   manipulate the image in ways that are not yet supported by Jpgraph. For
  49   example include the image in generated PDF files.
  50  <BR><I> Example:</I><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT
  51  color="#0000BB">&nbsp;$handle&nbsp;</FONT><FONT color="#007700">=&nbsp;</FONT><FONT color="#0000BB">
  52  $graph</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">Stroke</FONT><FONT
  53  color="#007700">(</FONT><FONT color="#0000BB">_IMG_HANDLER</FONT><FONT color="#007700">
  54  );</FONT><FONT color="#0000BB"></FONT></FONT></CODE></DIV>
  55  <P></P>
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