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                ขอคำแนะนำ การสร้างกราฟ   Bar Gruop โดยใช้ chart.js  คะ  ต้องการดึงข้อมูลออกมาเปรียบเทียบกัน 3 ปี คือ 2559 2560 2561  
แต่ปัญหาที่เจอตอนนี้คือ  มันดึงข้อมูลเฉพาะ ปี 2561   ออกมาแสดงเท่ากันทุกแท่งเลยคะ  
พอลองใช้คำสั่ง   
Code (PHP) 
  var_dump($totals); 
  
ออกมาดูมัน ออกแบบมานี้คะ   แต่พอแสดงกราฟแล้วมัน ดึงข้อมูลแค่นี้ 2561  มาแสดง 
 
 
Code (PHP) 
array(1) { [0]=> string(5) "44252" }
array(2) { [0]=> string(5) "44252" [1]=> string(5) "40541" } 
array(3) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" } 
array(4) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" } 
array(5) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" } 
array(6) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" } 
array(7) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" } 
array(8) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" } 
array(9) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" [8]=> string(1) "0" } 
array(10) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" [8]=> string(1) "0" [9]=> string(1) "0" } 
array(11) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" [8]=> string(1) "0" [9]=> string(1) "0" [10]=> string(1) "0" } 
array(12) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" [8]=> string(1) "0" [9]=> string(1) "0" [10]=> string(1) "0" [11]=> string(1) "0" } 
array(13) { [0]=> string(5) "44252" [1]=> string(5) "40541" [2]=> string(5) "43558" [3]=> string(5) "11367" [4]=> string(1) "0" [5]=> string(1) "0" [6]=> string(1) "0" [7]=> string(1) "0" [8]=> string(1) "0" [9]=> string(1) "0" [10]=> string(1) "0" [11]=> string(1) "0" [12]=> string(5) "44252" }
 
 
[/php] 
Code (PHP) 
$nowYear = date('Y');
$GraphYear = 2016;
for($year=$nowYear;$year>=$GraphYear;$year--) 
{ 
    for($month=1;$month<=12;$month++)
  {
       $d_bar =cal_days_in_month(CAL_GREGORIAN, $month, $year); 
       //echo "There was".$d_bar."days Month" .$month. "year" .$year. "<br>"; 
        
       $strBar= "SELECT COUNT (VN) as bargraph FROM DNHOSPITAL_TEST.dbo.HNOPD_MASTER WHERE VisitDate BETWEEN '".$year."-".$month."-1' AND '".$year."-".$month."-".$d_bar."' AND Cxl='0'";    
        
        $objBar = odbc_exec($conn,$strBar) or die ("Error SQL [".$strBar."]");
            while($objRow = odbc_fetch_object($objBar))
            {
                $totals[]=$objRow->bargraph;  
                //var_dump($totals);
            }
    }
  }
?>
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>ChartJs</title>
 
  </head>
<body>
<!--Bar Chart-->
<script src="vendor/chart.js/Chart.min.js"></script>
<canvas id="chartjs" class="chartjs" width="770" height="385" style="display:block; width 770; height:385px;"></canvas>   
	<script>
		var ctx = document.getElementById("chartjs");
 
                var myChart = new Chart(ctx, {
                    type: 'bar',
                    data: {
                        labels: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
                        datasets: [{
                            label: <?=json_encode($year)+3?>,
                            data: <?=json_encode($totals, JSON_NUMERIC_CHECK);?>,
                        backgroundColor: 
                            [
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                                'rgba(21, 140, 131, 0.5)',
                            ],
                        borderColor:
                            [
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                                'rgba(21, 140, 131, 1)',
                            ],
                            borderWidth: 1
                        },{
                            label: <?=json_encode(($year)+2)?>,
                            data: <?=json_encode($totals, JSON_NUMERIC_CHECK);?>,
                        backgroundColor: 
                            [
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                                'rgba(137, 133, 133, 0.5)',
                            ],
                            borderColor: 
                            [
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                                'rgba(137, 133, 133, 1)',
                            ],
                            borderWidth: 1
                        },{
                            label: <?=json_encode(($year)+1)?>,
                            data: <?=json_encode($totals, JSON_NUMERIC_CHECK);?>,
                        backgroundColor: 
                            [
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                                'rgba(0, 90, 90, 0.5)',
                            ],
                            borderColor: 
                            [
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                                'rgba(0, 90, 90, 1)',
                            ],
                            borderWidth: 1
                        }]
                    },
                    options: {
                        scales: {
                            yAxes: [{
                                ticks: {
                                    beginAtZero:true
                            }
                        }]
                    },
                     responsive: true,
                     title: {
                        display: true,
                        text: 'THAI STATISTICS HOSPITAL PATIENT OF OPD'
                    }
                }
            });
</script>
<?php
?>
</body>
</html>
 
 
  
 
ข้อมูล ที่อยู่ Table 
 
 
 
  Tag : PHP               
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  ประวัติการแก้ไข 2018-04-12 09:36:05 2018-04-12 09:39:35 2018-04-12 09:40:19 2018-04-17 10:18:30	
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                      | Date :
                          2018-04-12 09:33:10 | 
                      By :
                          nottpoo | 
                      View :
                          1813 | 
                      Reply :
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