Hello.
I'm trying to create a 2D chart with MySQL data that would show two data ranges. For previous and current results. I have to use two queries
1. "SELECT name, points FROM results GROUP BY name";
2. "SELECT name, pointsold FROM results GROUP BY name";
How to combine this in code?
<?php
// Form the SQL query that returns the top 10 most populous countries
$strQuery = "SELECT name, points FROM results GROUP BY name";
// Execute the query, or else return the error message.
$result = $dbhandle->query($strQuery) or exit("Error code ({$dbhandle->errno}): {$dbhandle->error}");
// If the query returns a valid response, prepare the JSON string
if ($result) {
// The `$arrData` array holds the chart attributes and data
$arrData = array(
"chart" => array(
"caption" => "Rozkład punktacji",
"paletteColors" => "#0075c2",
"bgColor" => "#ffffff",
"borderAlpha"=> "20",
"canvasBorderAlpha"=> "0",
"usePlotGradientColor"=> "0",
"plotBorderAlpha"=> "0",
"showXAxisLine"=> "1",
"xAxisLineColor" => "#999999",
"showValues" => "1",
"divlineColor" => "#999999",
"divLineIsDashed" => "1",
"showAlternateHGridColor" => "0"
)
);
$arrData["data"] = array();
// Push the data into the array
while($row = mysqli_fetch_array($result)) {
array_push($arrData["data"], array(
"label" => $row["nazwa"],
"value" => $row["punkty"]
)
);
}
/*JSON Encode the data to retrieve the string containing the JSON representation of the data in the array. */
$jsonEncodedData = json_encode($arrData);
/*Create an object for the column chart using the FusionCharts PHP class constructor. Syntax for the constructor is ` FusionCharts("type of chart", "unique chart id", width of the chart, height of the chart, "div id to render the chart", "data format", "data source")`. Because we are using JSON data to render the chart, the data format will be `json`. The variable `$jsonEncodeData` holds all the JSON data for the chart, and will be passed as the value for the data source parameter of the constructor.*/
$columnChart = new FusionCharts("column2D", "myFirstChart" , 600, 300, "chart-2", "json", $jsonEncodedData);
// Render the chart
$columnChart->render();
// Close the database connection
$dbhandle->close();
}
?>
