我想从数据库中获取值。我将如何做到这一点？请帮忙

addMarkerToGroup(group, {lat:33.6844, lng:73.0479},
    '<div>PH: 7.5 ' +
    '</div><div>Temp: 24 <br>Conduct: 600</div>');

现在它是硬编码的，但我需要这些值（lat，long，ph，temp，conduct）来自mysql数据库。。数据库已经创建，只需要在Map上获取和设置标记。

function addMarkerToGroup(group, coordinate, html) {
  var marker = new H.map.Marker(coordinate);
  // add custom data to the marker
  marker.setData(html);
  group.addObject(marker);
}

function addInfoBubble(map) {
  var group = new H.map.Group();

  map.addObject(group);

  // add 'tap' event listener, that opens info bubble, to the group
  group.addEventListener('tap', function (evt) {
    // event target is the marker itself, group is a parent event target
    // for all objects that it contains
    var bubble =  new H.ui.InfoBubble(evt.target.getPosition(), {
      // read custom data
      content: evt.target.getData()
    });
    // show info bubble
    ui.addBubble(bubble);
  }, false);

  addMarkerToGroup(group, {lat:33.6844, lng:73.0479},
    '<div>PH: 7.5 ' +
    '</div><div>Temperture: 24 <br>Conductivity: 600</div>');
}