<?php
    $db = new SQLite3('/home/pi/ECE522/test.db');
    if(!$db) {
      echo $db->lastErrorMsg();
    } else {
      echo "Opened DATABASE!";
      $query = $db->prepare('SELECT df1, df2 FROM PLCValues');
      $query->bindParm('df1', $df1,PDO::PARAM_STR);
      $query->bindParm('df2', $df2,PDO::PARAM_STR);
      $query->execute();
      var_dump($df1);
      var_dump($df2);
      echo $df1;
      echo $df2;
   }
?>