Without a full understanding of these:
PHP Code:
include("/usr/share/php/jpgraph-3.0.7/src/jpgraph.php");
include("/usr/share/php/jpgraph-3.0.7/src/jpgraph_line.php");
include('/usr/share/php/jpgraph-3.0.7/src/jpgraph_date.php');
include('/usr/share/php/jpgraph-3.0.7/src/jpgraph_utils.inc.php');
Not many people will be able to help you.
Please post those as well.