Acceso a Datos con SQL¶

En el controlador

use yii\db\Query;
use yii\helpers\Html;

public function actionPdf($id)
        {
    $mpdf=new mPDF();
        $mpdf->AddPage('utf-8','Letter','V','',15,15,35,25,9,9,'P'); 

    if (isset($_GET['id'])) {
    $query = new Query;
    $query->select(['t_personas.nombre as persona','fecmov','concepto','debe', 'haber'])->from('t_ctacte')->join('INNER JOIN', 't_cuentas_personas', 't_cuentas_personas.id = t_ctacte.idcuentapersona')->join('INNER JOIN', 't_personas', 't_cuentas_personas.idpersona = t_personas.id')->where('idcuentapersona='.$_GET['id']);
    $command = $query->createCommand();
    $data = $command->queryAll();

    $html = '<table>';
    foreach ($data as $row) {
        $html .= '<tr>';
        $html .= '<td>' . $row['persona'] . '</td>';
        $html .= '<td>' . $row['fecmov'] . '</td>';
        $html .= '<td>' . $row['concepto'] . '</td>';
        $html .= '<td>' . $row['debe'] . '</td>';
        $html .= '<td>' . $row['haber'] . '</td>';
        $saldo=$row['haber']-$row['debe'];
        $diferencia=$diferencia-$saldo;
        $html .= '<td>' . $diferencia . '</td>';
    }
    $html .= '</table>';

    $mpdf->WriteHTML($html);
    //return Html::encode($html);
    }
    $mpdf->Output();
        exit;

}