gistfile1.phtml

//Проверяем наличие комментария о нарушении срока
$items = get_posts(array(
	'post_type'       => 'post',
  	'numberposts' => 500,
));

//Создаем массив и помещаем туда данные комментов
$data = array();
foreach($items as $post): setup_postdata( $post );
	
    
    $day = date_format(date_create($post->post_date),'Y-m-d');
	$week = date_format(date_create($post->post_date),'W');
	$month = date_format(date_create($post->post_date),'Y-m');
	$year = date_format(date_create($post->post_date),'Y');
    
    $term = wp_get_post_terms(
      $post->ID, 
      'category', 
      array('fields' => 'names')
    );

 	if($term[0]) {
    	$cat = $term[0];
    } else {
    	$cat = 'Отсутствует';
    }
    
    $user = get_userdata($post->post_author);
    
    
	$data[] = array(
      'day' => $day,
      'week' => $week,
      'month'=> $month,
      'user_id' => $post->post_author,
      'name' => $cat,
      'c_id' => $post->ID,
);
endforeach;
wp_reset_postdata();
//var_dump($data);

//Кросстабуляция данных (свод таблицы)
$pivot_table = cp_array_to_pivot_table($data, $a = 'month', $head ='name');

?>    
    
<div id="chart_div" style="height: 555px;"></div>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable(<?php echo json_encode($pivot_table)?>);

        var options = {
          vAxis: {minValue: 0},
          isStacked: true,
        };

        var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }
</script>