<html>
<head>
<script language="javascript" type="text/javascript" 
src="js/jquery1.6.1.min.js"></script>
<script language="javascript" type="text/javascript" 
src="js/jquery.barchart.min.js"></script>
<script language="javascript" type="text/javascript" 
src="js/categoryAxisRenderer.min.js"></script>
<script language="javascript" type="text/javascript" 
src="js/pointLabels.min.js"></script>
<script type="text/javascript">

<?php
$dataArray = array(); 
 $con=mysqli_connect("localhost","root","","hotel_administration");
 //1
$result = mysqli_query($con,"SELECT COUNT(*) FROM stock_details");
$row = mysqli_fetch_array($result);
$NumProducts = $row[0];
$dataArray[] = "['Products', ".$NumProducts."]";
 //2
$result = mysqli_query($con,"SELECT COUNT(*) FROM stock_sales"); //edit sql 
here
$row = mysqli_fetch_array($result);
$Numtemp = $row[0];
$dataArray[] = "['Sales Transactions', ".$Numtemp."]"; 
 //2
$result = mysqli_query($con,"SELECT COUNT(*) FROM purchaseorder where 
status='waiting'"); //edit sql here
$row = mysqli_fetch_array($result);
$NumSup = $row[0];
$dataArray[] = "['Purchase orders', ".$NumSup."]"; 
 //2
$result = mysqli_query($con,"SELECT COUNT(*) FROM customer_details"); 
//edit sql here
$row = mysqli_fetch_array($result);
$NumCus = $row[0];
$dataArray[] = "['Customers', ".$NumCus."]"; 
 $line = implode (", ", $dataArray);
?>
$(document).ready(function(){
$.jqplot.config.enablePlugins = true;
var line1 = [<?php echo $line;?>];
 $('#chart1').jqplot([line1], {
title:' ',
seriesDefaults:{
renderer:$.jqplot.BarRenderer,
rendererOptions: {
varyBarColor: true
}
},
axes:{
xaxis:{
renderer: $.jqplot.CategoryAxisRenderer,
}
}
});
});
</script>
</head>
<body>
<div id="chart1"></div>
</body>
</html>

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