如何将json编码更改为数组字符串

Question

我的任务是解决如何将 JSON 编码更改为数组字符串，请查看下面的代码：我有["11:00"]["09:00"]["01:00"]["12:00"]["11:00"]["10:00"]["01:00"]["00:00"]["23:00"]["22:00"]如何改变它成为["11:00","09:00","01:00","11:00","10:00","01:00","00:00","23:00","22:00"]我的stats.php样子是这样的：out .=  '         <div class="col-lg-5 col-md-5 col-sm-5 col-lg-offset-1 col-md-offset-1 col-sm-offset-1" style="height: 300px">';        $out .=  '          <div class="chartjs-size-monitor">';        $out .=  '              <div class="chartjs-size-monitor-expand">';        $out .=  '                  <div class=""></div>';        $out .=  '              </div>';        $out .=  '              <div class="chartjs-size-monitor-shrink">';        $out .=  '                  <div class=""></div>';        $out .=  '              </div>';        $out .=  '         </div>';        $out .=  '         <canvas id="myChart2" class="canpas chartjs-render-monitor" style="display: block; width: 454px; height: 300px;" width="454" height="300"></canvas>';        $out .=  '        </div>';$graph_query = mssql_query("SELECT TOP 100 Convert(nvarchar,dtDate,108) AS Date, serial, nAverageUser, nMaxUser FROM tbl_ServerUser_Log ORDER BY serial DESC");            $i = 1;            while ($graph = mssql_fetch_array($graph_query)) {                $graph['nMaxUser'] = round($graph['nMaxUser'] * $percent_inc);                $graph['nAverageUser'] = round($graph['nAverageUser'] * $percent_inc);                $serie1->addPoint(new Point($graph['Date'], $graph['nMaxUser']));                $serie2->addPoint(new Point($graph['Date'], $graph['nAverageUser']));                $date = date('H:i', strtotime($graph['Date']));                $convert = json_encode(str_split($date, 5));                // $convert = str_replace('][','',$convert);                echo $convert;            }我只想显示从手动值到从 SQL 服务器捕获的查询值的图表。预先感谢您回答我的问题。

Answer 1

不要每次循环都回显 JSON。将时间放在一个数组中，并在末尾回显 JSON。

$dates = [];

while ($graph = mssql_fetch_array($graph_query)) {

    $graph['nMaxUser'] = round($graph['nMaxUser'] * $percent_inc);

    $graph['nAverageUser'] = round($graph['nAverageUser'] * $percent_inc);

    $serie1->addPoint(new Point($graph['Date'], $graph['nMaxUser']));

    $serie2->addPoint(new Point($graph['Date'], $graph['nAverageUser']));

    $date = date('H:i', strtotime($graph['Date']));

    $dates[] = $date;

    echo $convert;

}

echo json_encode($dates);