在PHP中如何在关联数组中将行转换为列名

我想在PHP中将关联数组中的行转换为列名。我的数据以关联数组格式存储在单个变量

$salesone

中

下面是存储在变量

$salesone

中的数据

[{"Datetime":"2011-01-31", "Make":"Datsun", "Sales":0},
 {"Datetime":"2011-02-28", "Make":"Datsun", "Sales":0},
 {"Datetime":"2011-03-31", "Make":"Datsun", "Sales":0},
 {"Datetime":"2011-01-31", "Make":"Fiat", "Sales":2150},
 {"Datetime":"2011-02-28", "Make":"Fiat", "Sales":1839},
 {"Datetime":"2011-03-31", "Make":"Fiat", "Sales":1860},
 {"Datetime":"2011-01-31", "Make":"Ford", "Sales":10026},
 {"Datetime":"2011-02-28", "Make":"Ford", "Sales":9293},
 {"Datetime":"2011-03-31", "Make":"Ford", "Sales":10485}]

但谷歌的折线图无法解释它来绘制折线图。它给了我以下错误：

'给定轴上的所有数据必须是相同的数据类型'

我想要以下格式的数据：

[{"Datetime":"2011-01-31", "Datsun":0, "Fiat":2150, "Ford":10026},
{"Datetime":"2011-02-28", "Datsun":0, "Fiat":1839, "Ford":9293},
{"Datetime":"2011-01-31", "Datsun":0, "Fiat":1860, "Ford":10845}]

---

如何在PHP中以编程方式转换此数据？（它作为关联数组存储在

$salesone

变量中）。

请使用以下代码进行输出：

<?php
$number = '[{"Datetime":"2011-01-31","Make":"Datsun","Sales":0},
{"Datetime":"2011-02-28","Make":"Datsun","Sales":0},
{"Datetime":"2011-03-31","Make":"Datsun","Sales":0},
{"Datetime":"2011-01-31","Make":"Fiat","Sales":2150},
{"Datetime":"2011-02-28","Make":"Fiat","Sales":1839},
{"Datetime":"2011-03-31","Make":"Fiat","Sales":1860},
{"Datetime":"2011-01-31","Make":"Ford","Sales":10026},
{"Datetime":"2011-02-28","Make":"Ford","Sales":9293},
{"Datetime":"2011-03-31","Make":"Ford","Sales":10485}]';

$number = json_decode($number);
$output = array();
foreach($number as $value){
    $output[$value->Datetime]['Datetime'] = $value->Datetime;
    $output[$value->Datetime][$value->Make] = $value->Sales;
}
$output = array_values($output);
$output = json_encode($output);
echo $output;

---

您可以使用试试这个。希望它能起作用

    $string='[{"Datetime":"2011-01-31", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-02-28", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-03-31", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-01-31", "Make":"Fiat", "Sales":2150},
     {"Datetime":"2011-02-28", "Make":"Fiat", "Sales":1839},
     {"Datetime":"2011-03-31", "Make":"Fiat", "Sales":1860},
     {"Datetime":"2011-01-31", "Make":"Ford", "Sales":10026},
     {"Datetime":"2011-02-28", "Make":"Ford", "Sales":9293},
     {"Datetime":"2011-03-31", "Make":"Ford", "Sales":10485}]';

    $array=json_decode($string,true);
    $newArray=array();
    $keyArray=array();
    $indexArray=array();
    $index=0;
    foreach ($array as $position => $dataArray)
    {
        if(!in_array($array[$position]['Datetime'], $keyArray))
        {
            $keyArray[]=$array[$position]['Datetime'];
            $indexArray[$array[$position]['Datetime']]=$index;
            $index++;
        }
    }
    foreach($array as $position => $dataArray)
    {
        foreach($dataArray as $key => $value)
        {
            if($key=='Datetime' && empty($newArray[$indexArray[$value]]['Datetime']))
            {
                $newArray[$indexArray[$value]]['Datetime']=$value;
            }
            else
            {
                $indexArray[$array[$position]['Datetime']];
                $newArray[$indexArray[$array[$position]['Datetime']]][$dataArray['Make']]=$dataArray['Sales'];
                break;
            }
        }
    }
    print_r($newArray);

    $newArray1=array();
    $colIndex=0;
    foreach($newArray as $index => $dataArray)
    {
        foreach($dataArray as $key => $value)
        {
            if(count($newArray1['cols'])!=4)
            {
                $type=($key=='Datetime') ? 'date' : 'string';
                $newArray1['cols'][$colIndex]['label']=$key;
                $newArray1['cols'][$colIndex]['type']=$type;
                $colIndex++;
            }
            else
            {
                $colIndex=0;
            }
            if(preg_match('/^([\d]{4})-([\d]{2})-([\d]{2})$/',$value,$matches))
            {
                $value='Date('.$matches[1].', '.$matches[2].', '.$matches[3].')';
            }
            $newArray1['rows'][$index]['c'][]['v']=$value;;
        }
    }
    print_r($newArray1);

这将为您的问题提供准确的答案。
您的输出如下：[{“Datetime”：“2011-01-31”，“Datsun”：0，“菲亚特”：2150，“福特”：10026}，{“Datetime”：“2011-02-28”，“Datsun”：0，“菲亚特”：1839，“福特”：9293}，{“Datetime”：“2011-03-31”，“Datsun”：0，“菲亚特”：1860，“福特”：10485}]非常感谢。非常感谢你的帮助。如果我想再次像这样转换这个字符串：
{“cols”：[{“label”：“Datetime”，“type”：“date”}，{“label”：“Datsun”，“type”：“string”}，{“label”：“Fiat”，“type”：“string”}]，“rows”：[{“c”：[{“v”：“date 2011，0，31）”}，{“v”：“0”}，{“v”：2150}，{“c”：“v”：“date}]}.
有什么办法可以做到这一点吗？感谢拉胡尔对我上述代码的回答，如：{“cols”：[{“label”：“Datetime”，“type”：“date”}，{“label”：“type”：“string”}，{“label”：“Fiat”，“type”：“string”}，{“label”：“Ford”，“type”：“string”}，{“rows”：[{“c”：[{“v”：“date（1970,1,1）“}，{“v”：0}，{“v”：1839}，{“v”：9293}，{“c”：[{“v”：“date（1970,1,1）”}，{“v”：0}，{“v”：1860}，{“v”：10485}]}与您的答案匹配非常感谢javedrathod。但它给了我一个错误“遇到了一个格式不正确的数值”。在这一行代码
$newOutput['rows'][$counter['c']['c']['v'=（$key==“$Datetime=”（$date date date（'Y，n，j'，$innerValue）。”：$innerValue；
只需首先确定日期，并在PHP条件函数中使用它。非常感谢Sahil。非常感谢您的方法。但是google图表需要为google图表定义行和列。现在我需要对输出格式进行一个小的修改。我想修改它如下：`{“cols”：[{“标签”；“日期时间”；“类型”；“日期”；“标签”；“日期”；“类型”；“字符串”；“标签”；“格式”；“字符串”；“行”；“{”c:“{”v:“日期（2011,0,31）”，{”v:“日期”；{”v:“日期（2011,1,28）”，{”c:“{”日期（2011,1,28）”，{”v:“日期（2011,2,31）”，{”c:{”v:“：“日期（2011,2,31）”，{”v:“欢迎您的光临：{您的结果是这种格式吗？@sahil…我需要为json数据定义行和列，因为google charts无法解释没有行和列的图形。@rahul16590抱歉，我花了很长时间..bcoz..我在办公室时回答问题..但我必须感谢您的问题…我编辑了我的答案。。。。
    $string='[{"Datetime":"2011-01-31", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-02-28", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-03-31", "Make":"Datsun", "Sales":0},
     {"Datetime":"2011-01-31", "Make":"Fiat", "Sales":2150},
     {"Datetime":"2011-02-28", "Make":"Fiat", "Sales":1839},
     {"Datetime":"2011-03-31", "Make":"Fiat", "Sales":1860},
     {"Datetime":"2011-01-31", "Make":"Ford", "Sales":10026},
     {"Datetime":"2011-02-28", "Make":"Ford", "Sales":9293},
     {"Datetime":"2011-03-31", "Make":"Ford", "Sales":10485}]';

    $array=json_decode($string,true);
    $newArray=array();
    $keyArray=array();
    $indexArray=array();
    $index=0;
    foreach ($array as $position => $dataArray)
    {
        if(!in_array($array[$position]['Datetime'], $keyArray))
        {
            $keyArray[]=$array[$position]['Datetime'];
            $indexArray[$array[$position]['Datetime']]=$index;
            $index++;
        }
    }
    foreach($array as $position => $dataArray)
    {
        foreach($dataArray as $key => $value)
        {
            if($key=='Datetime' && empty($newArray[$indexArray[$value]]['Datetime']))
            {
                $newArray[$indexArray[$value]]['Datetime']=$value;
            }
            else
            {
                $indexArray[$array[$position]['Datetime']];
                $newArray[$indexArray[$array[$position]['Datetime']]][$dataArray['Make']]=$dataArray['Sales'];
                break;
            }
        }
    }
    print_r($newArray);

    $newArray1=array();
    $colIndex=0;
    foreach($newArray as $index => $dataArray)
    {
        foreach($dataArray as $key => $value)
        {
            if(count($newArray1['cols'])!=4)
            {
                $type=($key=='Datetime') ? 'date' : 'string';
                $newArray1['cols'][$colIndex]['label']=$key;
                $newArray1['cols'][$colIndex]['type']=$type;
                $colIndex++;
            }
            else
            {
                $colIndex=0;
            }
            if(preg_match('/^([\d]{4})-([\d]{2})-([\d]{2})$/',$value,$matches))
            {
                $value='Date('.$matches[1].', '.$matches[2].', '.$matches[3].')';
            }
            $newArray1['rows'][$index]['c'][]['v']=$value;;
        }
    }
    print_r($newArray1);