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<HR NOSHADE>
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<H3><A NAME="4_2_1">4.2.1 Using the JpGraph library to send back images</A>
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</H3>
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<P> To get access to the JpGraph library you will need to include at
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least two files, the base library and one or more of the plot
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extensions. So for example to create a basic line plot the top of your
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PHP file must have the lines:<DIV class="phpscript"><CODE><FONT color="#000000">
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<FONT color="#0000BB">
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<BR></FONT><FONT color="#007700">include (</FONT><FONT color="#DD0000">
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'jpgraph.php'</FONT><FONT color="#007700">);
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<BR>include (</FONT><FONT color="#DD0000">'jpgraph_line.php'</FONT><FONT color="#007700">
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);
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<BR>...
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<BR> </FONT><FONT color="#FF8000">// Code that uses the jpgraph library
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<BR></FONT><FONT color="#007700">...</FONT><FONT color="#0000BB"></FONT></FONT>
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</CODE></DIV></P>
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<P></P>
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<P><DIV class="note"><B>Note:</B> You might also use the PHP directive<I>
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require</I>. The difference is subtle in that include will only include
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the code if the include statement is actually executed. While require()
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will always be replaced by the file specified. See PHP documentation
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for further explanation. For most practical purposes they are
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identical.</DIV></P>
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