I am using the 3 files from
https://google-developers.appspot.com/chart/interactive/docs/php_example.
No chart is displayed.
I have tried with and without
jsonData = eval('(' + jsonData + ')');
I do not get an alert.
Here are the programs:
examplesUsingPHP.html
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript"
src="https://www.google.com/jsapi";></script>
<script type="text/javascript" src="jquery-1.6.2.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "getData.php",
dataType:"json",
async: false
}).responseText;
// Create our data table out of JSON data loaded from server.
alert(jsonData);
jsonData = eval('(' + jsonData + ')');
var data = new google.visualization.DataTable(jsonData);
// Instantiate and draw our chart, passing in some options.
var chart = new
google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, {width: 400, height: 240});
}
</script>
</head>
------------------
getData.php
<?php
// This is just an example of reading server side data and sending it to
the client.
// It reads a json formatted text file and outputs it.
$string = file_get_contents("sampleData.json");
echo $string;
// Instead you can query your database and parse into JSON etc etc
?>
----------------------
sampleData.json
{
"cols": [
{"id":"","label":"Topping","pattern":"","type":"string"},
{"id":"","label":"Slices","pattern":"","type":"number"}
],
"rows": [
{"c":[{"v":"Mushrooms","f":null},{"v":3,"f":null}]},
{"c":[{"v":"Onions","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Olives","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Zucchini","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Pepperoni","f":null},{"v":2,"f":null}]}
]
}
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