google chart 与 php + ajax 串接问题？

Question

谷歌 chart 问题
官方文件 https://google-developers.app...

$.getJSON('XXX&m=' + m, function(json) {
      var data = new google.visualization.DataTable(json);
      data.addColumn('string', '');
      data.addColumn('number', '');
      data.addRows(json);
      console.log(json);

php

$chartData = $pdo->query(
      "SELECT DISTINCT
        FROM_UNIXTIME(add_time, '%m/%d') as add_time,
        count(view_id) as viewTime
      FROM `view`
      GROUP BY `add_time` "
    );

    foreach ($chartData as $key) {

        if (substr($key['add_time'] ,0 ,2) == $_GET['m']) {

          $data[] = array(
            $key['add_time'], (int) $key['viewTime']
          );
        }

    }

    echo json_encode($data ,JSON_UNESCAPED_SLASHES);

我每一笔 view 都有一个 add_time 时间戳
我上面是把时间戳转换为 mm/dd 格式，然后再透过 $_GET['m'] 带来的日期，例如 05

output [["11/01",1],["11/02",1],["11/03",1],["11/05",1]]

但其实 11/01 ,11/02, 11/03, 11/05 都是多笔的

透过 count(view_id) as viewTime 算出来都是一笔～

所以我想不到怎么算出每个日期共有几笔？

Answer 1

更換其他圖表 like chart.js