Question

我正在尝试从数据库中获取数据并使用它填充Highstock图表，之前我正在分配数据：＆＃39;对于从搜索生成的数据表的图表选项，我意识到数据将以随机顺序绘制系列。这是我尝试过的：

      function json_original()
{

$sql = "SELECT UNIX_TIMESTAMP(t1.`date`) as `date`, sum(t1.`present`) as `present` from record_attendance_cell t1 group by t1.`date`";

 $present_g = $this->db->query($sql)->result_array();

   foreach($present_g as $row) {
       $value = $row['present'];
       $datetime = $row['date'] * 1000; // convert from Unix timestamp to JavaScript time
       $data[] = "[$datetime, $value]";
       // echo join($data, ',');
       $result = json_encode($data);
       echo $result;
        }  
}

代码的结果包含许多相同数据的迭代： [＆＃34; [1483833600000,2]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;] [＆＃34; [ 1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;] [＆＃34; [1483833600000,2]＆＃34 ;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;] [＆＃34; [ 1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34; ，＆＃34; [1502319600000,11]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000 ，1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000， 22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;] [ ＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22 ]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃3 4;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34 ;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000 [12]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34; ，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000， 3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;] [ ＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22 ]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃ 34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000， 1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12] ＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34;，＆＃34; [1506985200000,3]＆＃34;] [＆＃ 34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34 ;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [ 1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34; ，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000， 12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [150396120000 0,9，＆＃34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [1508367600000,31]＆＃34; ] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000 ，22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9 ]＆＃34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [1508367600000,31]＆＃34;，＆＃ 34; [1509408000000,3]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1] ＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34 ; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃ 34;，＆＃34; [1503961200000,9]＆＃34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [ 1508367600000,31]＆＃34;，＆＃34; [1509408000000,3]＆＃34;，＆＃34; [15096672000 00,8]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34 ;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000 ，3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [1508367600000,31 ]＆＃34;，＆＃34; [1509408000000,3]＆＃34;，＆＃34; [1509667200000,8]＆＃34;，＆＃34; [1510790400000,10]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22] ＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34 ; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃ 34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [1508367600000,31]＆＃34;，＆＃34; [ 1509408000000,3]＆＃34;，＆＃34; [1509667200000,8]＆＃34;，＆＃34; [1510790400 000,10，＆＃34;，＆＃34; [1511049600000,12]＆＃34;] [＆＃34; [1483833600000,2]＆＃34;，＆＃34; [1484697600000,1]＆＃34 ;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34; [1502319600000,11]＆＃34;，＆＃34; [1502492400000 ，3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34;，＆＃34; [1506985200000,3]＆＃34;，＆＃34; [1507158000000,3 ]＆＃34;，＆＃34; [1508367600000,31]＆＃34;，＆＃34; [1509408000000,3]＆＃34;，＆＃34; [1509667200000,8]＆＃34;，＆＃ 34; [1510790400000,10]＆＃34;，＆＃34; [1511049600000,12]＆＃34;，＆＃34; [1511395200000,12]＆＃34;] [＆＃34; [1483833600000,2] ＆＃34;，＆＃34; [1484697600000,1]＆＃34;，＆＃34; [1491174000000,1]＆＃34;，＆＃34; [1497222000000,22]＆＃34;，＆＃34 ; [1502319600000,11]＆＃34;，＆＃34; [1502492400000,3]＆＃34;，＆＃34; [1503010800000,3]＆＃34;，＆＃34; [1503183600000,30]＆＃ 34;，＆＃34; [1503270000000,12]＆＃34;，＆＃34; [1503356400000,10]＆＃34;，＆＃34; [1503961200000,9]＆＃34;，＆＃34; [ 1506985200000,3]＆＃34;，＆＃34; [1507158000000,3]＆＃34;，＆＃34; [150836 7600000,31]＆＃34;，＆＃34; [1509408000000,3]＆＃34;，＆＃34; [1509667200000,8]＆＃34;，＆＃34; [1510790400000,10]＆＃34; ，＆＃34; [1511049600000,12]＆＃34;，＆＃34; [1511395200000,12]＆＃34;，＆＃34; [1514764800000,2]＆＃34;]

数据应如下所示： Format

参考文件： High Charts

Answer 1

请记住 json_encode必须使用一次：

foreach($present_g as $row) {
    $value = $row['present'];
    $datetime = $row['date'] * 1000; // convert from Unix timestamp to JavaScript time
    // Also remove quotes here, you don't need a string
    $data[] = [$datetime, $value];
}  
$result = json_encode($data);
echo $result;

格式化JSON_ENCODED数据PHP Highcharts

1 个答案: