use kartik\report\Report;

// ...
'components' => [
    // setup Krajee Yii2 Report component
    'report' => [
        'class' => Report::classname(),
        'apiKey' => 'YOUR_PHP_REPORTS_API_KEY',
        // the following variables can be set to globally default your settings
        'templateId' => 1, // optional: the numeric identifier for your default global template 
        'outputAction' => Report::ACTION_FORCE_DOWNLOAD, // or Report::ACTION_GET_DOWNLOAD_URL 
        'outputFileType' => Report::OUTPUT_PDF, // or Report::OUTPUT_DOCX
        'outputFileName' => 'KrajeeReport.pdf', // a default file name if 
        'defaultTemplateVariables' => [ // any default data you desire to always default
            'companyName' => 'Krajee.com'
        ]
    ]
]

use kartik\report\Report;

$report = Yii::$app->report;

// set your template identifier (override global defaults)
$report->templateId = 2;

// If you want to override the output file name, uncomment line below
// $report->outputFileName = 'My_Generated_Report.pdf';

// If you want to override the output file type, uncomment line below
// $report->outputFileType = Report::OUTPUT_DOCX;

// If you want to override the output file action, uncomment line below
// $report->outputFileAction = Report::ACTION_GET_DOWNLOAD_URL;

// Configure your report data. Each of the keys must match the template 
// variables set in your MS Word template and each value will be the
// evaluated to replace the Word template variable. If the value is an 
// array, it will treated as tabular data.
$report->templateVariables = [
    'client_name' => 'Murat Cileli', 
    'address' => 'Kadikoy, Istanbul / Turkey', 
    'date' => '10-Apr-2018', 
    'phone' => '+1-800-3399622', 
    'email' => '[email protected]', 
    'notes' => 'Thank you for your purchase.', 
    'quantities' => ['6', '3', '4'], 
    'products' => ['Apple iPhone 5S', 'Samsung Galaxy S5', 'Office 365 License'], 
    'prices' => ['490 USD', '399 USD', '199 USD'], 
];

// lastly in your controller action download the generated report
return $report->generateReport();