This example shows how to register a dataset in a Stimulsoft Viewer for PHP before rendering a dashboard. First, include the Stimulsoft libraries:

<?php
require_once '../vendor/autoload.php';

use Stimulsoft\Report\StiReport;
use Stimulsoft\Viewer\StiViewer;
?>

Create a Viewer object and configure JavaScript options such as relative paths and height:

$viewer = new StiViewer();
$viewer->javascript->relativePath = '../';
$viewer->options->height = '800px';

Create a report object and define dashboard events. In this example, onBeforeRender is used to register the data before the dashboard is built:

$report = new StiReport();
$report->onBeforeRender = 'onBeforeRender';

Process the viewer request on the server side using process():

$viewer->process();

Load the dashboard template using loadFile() and assign it to the viewer:

$report->loadFile('../reports/ProductStats.mrt');
$viewer->report = $report;

Render the necessary JavaScript code for the viewer on the client side using renderHtml():

<?php
$viewer->javascript->renderHtml();
?>

Define the onBeforeRender JavaScript function to create and register a dataset before building the dashboard:

function onBeforeRender(args) {
    let dataSet = new Stimulsoft.System.Data.DataSet("Demo");

    // Loading XSD schema file
    dataSet.readXmlSchemaFile("../data/Demo.xsd");

    // Loading XML data file
    dataSet.readXmlFile("../data/Demo.xml");

    // Optional: Loading JSON data instead of XML
    //dataSet.readJsonFile("../data/Demo.json");

    // Removing all connections from the dashboard template
    args.report.dictionary.databases.clear();

    // Registering the DataSet
    args.report.regData("Demo", "Demo", dataSet);
}

Finally, render the visual part of the viewer in the HTML body using renderHtml():

<?php
$viewer->renderHtml();
?>

In the screenshot below you can see the result of the sample code: