如何使用来自 Analytics API 的数据将相同的行数传递给 Google Charts API

Question

我正在尝试从 Analytics API 获取一些数据，然后使用 Google Charts API 将其显示为区域图。

以下数组包含来自 Analytics API v4 的两天的数据。屏幕截图显示了数据如何在查询资源管理器的表中返回/呈现。

<?php
    $results = [
      0 => 
      [
        'dimensions' => 
        [
          0 => 'Organic Search',
          1 => '20160831',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '13',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      1 => 
      [
        'dimensions' => 
        [
          0 => 'Social',
          1 => '20160830',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '7',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      2 => 
      [
        'dimensions' => 
        [
          0 => 'Organic Search',
          1 => '20160830',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '6',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      3 => 
      [
        'dimensions' => 
        [
          0 => 'Social',
          1 => '20160831',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '6',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      4 => 
      [
        'dimensions' => 
        [
          0 => 'Referral',
          1 => '20160831',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '3',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      5 => 
      [
        'dimensions' => 
        [
          0 => 'Referral',
          1 => '20160830',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '2',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
      6 => 
      [
        'dimensions' => 
        [
          0 => 'Direct',
          1 => '20160830',
        ],
        'metrics' => 
        [
          0 => 
          [
            'values' => 
            [
              0 => '1',
              1 => '0',
              2 => '0.0',
            ],
          ],
        ],
      ],
    ];

?>

我正在尝试将 30 天的默认渠道分组和会话数据绘制到面积图中。图表接受的数据格式如下：

[
  [
    {
      "label": "Day",
      "id": "day"
    },
    {
      "label": "Organic Search",
      "id": "organic_search",
      "type": "number"
    },
    {
      "label": "Referral",
      "id": "referral",
      "type": "number"
    },
    {
      "label": "Social",
      "id": "social",
      "type": "number"
    },
    {
      "label": "Direct",
      "id": "direct",
      "type": "number"
    }
  ],
  [
    "20160831",
    "13",
    "3",
    "0",
    "6"
  ],
  [
    "20160830",
    "1",
    "6",
    "2",
    "7"
  ]
]

这是我尝试将 API 数据放入图表数组的代码。

<?php

function getChartData($rows)
{
    // Get the unique dates
    $dates = [];
    foreach ($rows as $row) {
        $dates[] = $row['dimensions'][1];
    }
    $dates = array_unique($dates);

    // get the uniqe dimensions
    $dimensions = [];
    foreach ($rows as $row) {
        $dimensions[] = $row['dimensions'][0];
    }
    $dimensions = array_unique($dimensions);

    // Put all the values and the dimension filtered by date
    $values = [];
    foreach ($dates as $date) {
        foreach ($rows as $row) {
            if ($date == $row['dimensions'][1]) {
                $val = $row['metrics'][0]['values'];
                array_push($val, $row['dimensions'][0]);
                array_unshift($val, $date);
                $values[] = $val;
            }
        }
    }

    // Group the sessions metric value by date
    $chartValues = [];
    foreach ($dates as $date) {
        $val = [];
        foreach ($values as $value) {
            if ($date == $value[0]) {
                $val[] = $value[1];
            }
        }
        array_unshift($val, $date);
        $chartValues[] = $val;
    }

    return $chartValues;
}

我遇到的问题是 API 并不总是每天返回完全相同数量的渠道分组。

例如，8 月 31 日没有直接的流量会话数据。当它按原样传递给图表时，它会失败，因为它总是期望值总是在数组中具有相同数量的项目。

如果缺少任何渠道分组会话数据，我如何添加一个空值，以便面积图数组每天接收相同数量的值？

Answer 1

尝试使用null 值

        if ($date == $row['dimensions'][1]) {
            $val = $row['metrics'][0]['values'];
            array_push($val, $row['dimensions'][0]);
            array_unshift($val, $date);
            $values[] = $val;
        } else {
            $val = null;
            array_push($val, $row['dimensions'][0]);
            array_unshift($val, $date);
            $values[] = $val;
        }

Answer 2

如果有人遇到同样的问题，我就是这样做的：

<?php

function getAreaChartValues($response) 
{
    // Get the rows of the response
    $rows = $response->toSimpleObject()->reports[0]['data']['rows'];

    $dimensions = [];

    $results = [];
    foreach ($rows as $row) {

        // Add all the dimensions to the dimensions array
        $dimensions[] = $row['dimensions'][0];

        $date = isset($row['dimensions'][1]) ? $row['dimensions'][1] : '';
        $ValueType = $row['dimensions'][0];
        $value = $row['metrics'][0]['values'][0];

        if (!isset($results[$date])) {
            $results[$date] = [];
        }

        $results[$date][$ValueType] = $value;
    }

    ksort($results);

    $dimensions = array_unique($dimensions);

    // Check for any non existant value for a dimension 
    // And add empty values
    foreach ($dimensions as $dimension) {
        foreach ($results as &$result) {
            if (!array_key_exists($dimension, $result)) {
                $result[$dimension] = 0;
            }
            ksort($result);
        }
    }

    return $results;
}