I am trying to display a chart using PHP and MySQL but it does not display
anything
here is my test.php file:
<html>
<head>
<script type="text/javascript">
google.charts.load('current', {packages: ['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
// Define the chart to be drawn.
var data = google.visualization.arrayToDataTable([
['Specialization', 'Facultyno'],
<?php
require_once('../mydb_connect.php');
$query="SELECT distinct(s.specializationname) as 'specialization',
count(fs.facultyid) as 'facultyno' from thesisdb.specialization s join
facultyspecialization fs on s.specializationid=fs.specializationid group by
s.specializationID";
$result = mysqli_query($dbc,$query);
while($row = mysqli_fetch_array($result))
{
echo "['".$row['specialization']."',
".$row['facultyno']."],";
}
?>
]);
var options = {'title':'Number of Faculty Specializations',
'width':1300,
'height':900};
}
// Instantiate and draw the chart.
var chart = new
google.visualization.ColumnChart(document.getElementById('no_of_specialization'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="no_of_specialization"/>
<?php
require_once('../mydb_connect.php');
$query="SELECT distinct(s.specializationname) as specialization,
count(fs.facultyid) as facultyno from thesisdb.specialization s join
facultyspecialization fs on s.specializationid=fs.specializationid group by
s.specializationID;";
// I was testing if the data can be displayed without the charts
$result = mysqli_query($dbc,$query);
while($row = mysqli_fetch_array($result))
{
echo "{$row['specialization']}<br>";
echo "{$row['facultyno']}<br>";
}
?> // it apparently worked
</body>
</html>
So there is a problem with my charts
here are my other references:
the result of the query I executed
<https://lh3.googleusercontent.com/-X6RnvFNtYFk/WeoUuVTm6XI/AAAAAAAAD4Q/5nzHX_2Kd1wC7wxmgPcz67NS_ZiCSBxLgCLcBGAs/s1600/Capture.PNG>
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