如何通過JSON搜索？

Question

我正在嘗試使用PHP搜索此Json數組：

{"count":"2","items":{"milestone":[{"id":"3107","username":"TomSmith1","userid":"1620602","date":"2012-01-12 16:49:26","projectid":"804","projectname":"TEST PROJECT","reason":"Partial payment for project","amount":"25","currency":"1"},{"id":"3111","username":"HarryCole","userid":"1620603","date":"2012-01-13 16:42:39","projectid":"804","projectname":"TEST PROJECT 2","reason":"Partial payment for project","amount":"10","currency":"1"}]}}

我想在其中搜索“ id”，其名稱為“ TEST PROJECT 2”，項目名稱為“ HarryCole”。 我已經嘗試過使用foreach循環，但是沒有成功。 誰能指出我正確的方向？ 謝謝。

Answer 1

您想在字符串上使用json_decode($json, true)將其從JSON轉換為PHP表示法（關聯數組）。

Answer 2

您將需要http://us2.php.net/json_decode和一個foreach循環，例如

foreach($json_decoded as $key=>$value) {
     // Check for id / values
}