(PHP, Google Chart) Pie Chart using data in the PHP page

Question

I'm new to PHP, I tried to create the pie chart on my PHP page but it shows nothing.

These are my codes (I put all codes in HTML section)

and this the piechart.php parts

<script type="text/javascript">
  google.charts.load('current', {'packages':['corechart']});
  google.charts.setOnLoadCallback(drawChart);
  function drawChart() {

    var data = google.visualization.arrayToDataTable([
      ['Position', 'Applicant(s)'],

      <?php 
        for($i = 0; $i < $table_counter; $i++){
      ?> 

      [<?=$pos_chart[$i]?>, <?=$tapp_chart[$i]?>],

      <?php 
        }
      ?>

    ]);

    var options = {
      title: 'Pie chart of Total Applicants'
    };

    var chart = new google.visualization.PieChart(document.getElementById('piechart'));

    chart.draw(data, options);
  }
</script>

<div id="piechart" style="width: 900px; height: 500px;"></div>

The result for pie chart turns out only the big whole white space like this.

I don't know why. Please help.

I asked for generated js code not image. You dynamically generate js code (some chart arrays) - I am asking for this. — nospor
– nospor, Commented Jun 1, 2016 at 8:45
I can see he is using google.visualization.PieChart library. Thus, this whole question is about how he misused the google library. — David162795
– David162795, Commented Jun 1, 2016 at 10:08
@David162795 yeah, I have no idea about what I have to do now... — gznero
– gznero, Commented Jun 1, 2016 at 10:54

WhiteHat · Accepted Answer · 2016-06-01 12:35:06Z

1

the array values aren't being printed to JavaScript

need to use something like

<?=$pos_chart[$i]?>

or

<?php echo $tapp_chart[$i]?>

and don't see the need for the if statement

try this...

var data = google.visualization.arrayToDataTable([
  ['Position', 'Applicant(s)'],

  <?php
    for($i = 0; $i < $table_counter; $i++){
  ?>

  [<?="'".$pos_chart[$i]."'"?>,   <?=$tapp_chart[$i]?>],

  <?php
    }
  ?>

]);

edited Jun 1, 2016 at 12:35

answered Jun 1, 2016 at 12:09

WhiteHat

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