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

  google.charts.setOnLoadCallback(bar_chart);

    function bar_chart() {



      var jsonData = $.ajax({

          url: 'column_chart.php',

      dataType:"json",

      async: false,

          success: function(jsonData)

              {

                  var data = new google.visualization.arrayToDataTable(jsonData);
                  var options = {
                title: 'Przeprowadzone rozmowy',
                sort: 'enable',
                sortAscending: false,
                sortColumn: 2
            };

          var chart = new google.visualization.BarChart(document.getElementById('bar_chart'));

                  chart.draw(data, options);



              }

          }).responseText;

}

 </script>