我正在尝试使用 php 脚本将 json 文件转换为 csv 格式。 代码如下:
if (empty($argv[1])) die("The json file name or URL is missed'n");
$jsonFilename = $argv[1];
$json = file_get_contents($jsonFilename);
$array = json_decode($json, true);
$f = fopen('output.csv', 'w');
$firstLineKeys = false;
foreach ($array as $line)
{
if (empty($firstLineKeys))
{
$firstLineKeys = array_keys($line);
fputcsv($f, $firstLineKeys);
$firstLineKeys = array_flip($firstLineKeys);
}
fputcsv($f, array_merge($firstLineKeys, $line));
}
这种工作,但只返回 JSON 文件的外部变量,并且收到"数组到字符串转换"警告
JSON 数据如下所示:
{"type":"NON_ATTRIBUTED","conversion":{,"value_1":"000000100355321","value_3":"XXXX","value_4":"12667","value_5":"6"},"stream_type":"COOKIE"}
{"type":"ATTRIBUTED","conversion":{,"value_1":"000000167865321","value_3":"YYYY","value_4":"12668","value_5":"0"},"stream_type":"COOKIE"}
{"type":"NON_ATTRIBUTED","conversion":{,"value_1":"000000134535321","value_3":"AAAA","value_4":"12669","value_5":"9"},"stream_type":"COOKIE"}
{"type":"NON_ATTRIBUTED","conversion":{,"value_1":"000000100357651","value_3":"WWWW","value_4":"12670","value_5":"2"},"stream_type":"COOKIE"}
我得到的输出是:类型,转换,stream_typeNON_ATTRIBUTED,数组,饼干NON_ATTRIBUTED,数组,饼干
我期望的输出是:类型,转换,value_1,value_3,value_4,value_5,stream_typeNON_ATTRIBUTED,000000100355321, XXXX, 1267, 6, COOKIE..
感谢帮助,因为这对我来说很新
json_decode($json, true); 将 JSON 对象转换为关联数组。所以这个
{
"type":"NON_ATTRIBUTED",
"conversion":{,
"value_1":"000000100355321",
"value_3":"XXXX",
"value_4":"12667",
"value_5":"6"
},
"stream_type":"COOKIE"
}
变成这个:
array(3) {
["type"]=> string(14) "NON_ATTRIBUTED"
["conversion"]=> array(4) {
["value_1"]=> string(15) "000000100355321"
["value_3"]=> string(4) "XXXX"
["value_4"]=> string(5) "12667"
["value_5"]=> string(1) "6"
}
["stream_type"]=> string(6) "COOKIE"
}
如您所见,有嵌套数组。并且您尝试使用以下行将数组的所有元素插入到文本文件(csv 只是一个简单的文本文件):
fputcsv($f, array_merge($firstLineKeys, $line));
当数组的元素是字符串时,它工作得很好。但是当元素是数组时,我们得到了数组到字符串的转换。因此,您必须在嵌套数组上使用循环或array_merge来防止这种情况。
我无法清楚地理解您的 csv 必须是什么样子,但我希望您的代码修复对您有所帮助。如果没有,请在下面写评论。
if (empty($argv[1])) die("The json file name or URL is missed'n");
$jsonFilename = $argv[1];
$json = file_get_contents($jsonFilename);
$array = json_decode($json, true);
$f = fopen('output.csv', 'w');
$firstLineKeys = false;
foreach ($array as $line)
{
if (empty($firstLineKeys))
{
$firstLineKeys = array_keys($line);
fputcsv($f, $firstLineKeys);
$firstLineKeys = array_flip($firstLineKeys);
}
$line_array = array($line['type']);
foreach ($line['conversion'] as $value)
{
array_push($line_array,$value);
}
array_push($line_array,$line['stream_type']);
fputcsv($f, $line_array);
}
您的 json 中还有一个错误 - 不需要的逗号:"conversion":{,