@Emily:
I copied your exact code, changed the database info to my credentials,
changed the SQL query to the fetch the data I needed, and I get a blank
page when opening. There is no graph shown. Is there something I'm missing?
Thanks,
Andrew
On Thursday, August 18, 2016 at 8:40:23 AM UTC-4, Emile wrote:
>
> <?php
>>
>> $hostname = "localhost";
>> $username = "xxxxxx";
>> $password = "xxxxxx";
>> $database = "ecb";
>> $tabel = "eurorates";
>>
>> // Create connection
>> $conn = mysqli_connect($hostname, $username, $password, $database);
>> // Check connection
>> if (!$conn) {
>> die("Connection failed: " . mysqli_connect_error());
>> }
>>
>> //set array variable
>> $results = array();
>>
>> //talk to the db
>> $sql="SELECT * FROM eurorates WHERE currency = 'GBP' ORDER BY date DESC
>> limit 100";
>> $result = mysqli_query($conn, $sql);
>>
>> //count the rows and fields
>> $totalRows = mysqli_num_rows($result);
>> $totalFields = mysqli_num_fields($result);
>>
>> //start the loop
>> for ( $i = 0; $i < $totalRows; ++$i ) {
>>
>> //make it 2 dim in case you change your order
>> $results[$i] = mysqli_fetch_array($result);
>> }
>>
>> ?>
>>
>> <html>
>> <head>
>> <script type="text/javascript" src="http://www.google.com/jsapi
>> "></script>
>> <script type="text/javascript">
>> google.load( 'visualization', '1', { 'packages': [ 'corechart' ] }
>> );
>> google.setOnLoadCallback( drawChart );
>>
>> function drawChart() {
>> var data = new google.visualization.DataTable();
>>
>> data.addColumn( 'string', 'Datum' );
>> data.addColumn( 'number', 'Rate' );
>>
>> data.addRows(100);
>>
>> <?php
>>
>> $i = 0;
>> $numofloops = 100;
>>
>> while($i < $numofloops){
>>
>> echo "data.setValue($i, 0, '" . $results[$i]["date"] . "');";
>> echo "data.setValue($i, 1, " . $results[$i]["rate"] . ");";
>>
>> $i++;
>> }
>> ?>
>>
>> var options = {title: 'Echangerate EUR - GBP',
>> vAxis: {title: "Rate"},
>> hAxis: {title: "Date"},
>> colors: ['red','#004411']
>> };
>>
>> var chart = new
>> google.visualization.LineChart(document.getElementById('chart_div'));
>> chart.draw( data, options);
>> }
>> </script>
>> </head>
>> <body>
>> <div id="chart_div" style="width: 1500px; height: 800px;"></div>
>> </body>
>> </html>
>>
>>
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