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我一直在試着研究如何遍歷並輸出json文件的內容,其中字段名稱以「$」開頭,並繼續獲取Undefined可變錯誤信息
這裏是JSON文件的例子(從https://mixpanel.com/help/reference/webhooks採取)的例子:
[
{
"$distinct_id":"13b20239a29335",
"$properties":{
"$region":"California",
"$email":"[email protected]",
"$last_name":"Bovik",
"$created":"2012-11-20T15:26:16",
"$country_code":"US",
"$first_name":"Harry",
"Referring Domain":"news.ycombinator.com",
"$city":"Los Angeles",
"Last Seen":"2012-11-20T15:26:17",
"Referring URL":"http://news.ycombinator.com/",
"$last_seen":"2012-11-20T15:26:19",
}
},
{
"$distinct_id":"13a00df8730412",
"$properties":{
"$region":"California",
"$email":"[email protected]",
"$last_name":"Lytics",
"$created":"2012-11-20T15:25:38",
"$country_code":"US",
"$first_name":"Anna",
"Referring Domain":"www.quora.com",
"$city":"Mountain View",
"Last Seen":"2012-11-20T15:25:39",
"Referring URL":"http://www.quora.com/What-...",
"$last_seen":"2012-11-20T15:25:42",
}
}
]
我用一個靜態的字符串測試只是爲了嘗試和得到的東西的工作。這裏是我的測試代碼...
<?php
$input = '[{"$distinct_id":"13b20239a29335","$properties":"dddd"}]';
$jsonObj = json_decode($input, true);
foreach ($jsonObj as $item) {
foreach ($item as $rec) {
echo '<br>';
$my_id = $rec->$distinct_id;
echo($my_id);
$my_id = $rec->$properties;
echo($my_id);
}
echo '<br>';
}
?>
任何幫助,將不勝感激。
Noob!
UPDATE:穆薩給這個例子適用於單級JSON: 的foreach($ jsonObj爲$項目){
echo '<br>';
$my_id = $item->{'$distinct_id'};
echo($my_id);
$my_id = $item->{'$properties'};
echo($my_id);
echo '<br>';
}
這怎麼能那麼適於讀取和輸出更大的多級json文件的所有元素?
謝謝你的穆薩。非常感激。 我怎樣才能從主json文件中循環更深的元素? – user2525060
@ user2525060已更新 – Musa