[英]PHP mysql json Google charts
我正在開發一個使用Google Charting API的項目,並且希望使用json和php mysql來填充圖表。
<?php
$sql = $db->query("SELECT COUNT(depots_id) AS count FROM inputs WHERE etat_input ='Valider'");
$results = array();
while ($var = $sql->fetch(PDO::FETCH_ASSOC)) {
$results[] = $var;
}
$pie_chart_data = array();
foreach ($results as $result) {
$pie_chart_data[] = array((int)$result['count']);
}
$pie_chart_data = json_encode($pie_chart_data);
?>
和代碼JavaScript來構建圖表:
<script type="text/javascript">
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.DataTable();
data.addColumn('number','depots_id');
data.addRows({$pie_chart_data});
var options = {
title: 'My Daily Activities'
};
var chart = new google.visualization.PieChart(document.getElementById('piechart'));
chart.draw(data, options);
}
</script>
<div class="col-md-6 col-sm-6 col-xs-12">
<div id="piechart" style="width: 900px; height: 500px;"></div>
</div>
但這沒有結果。
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