如何訪問 Object 中具有數組的 JSON 的值？

Question

我想知道一種簡單的方法來訪問 JSON 之后的值，它擁有一個數組。 我在 PHP 編碼：

<?php

$json = '{"flight": "7800", "city": "New York", "time":[{"Houston":"17:34","Los Angles":"21:23"}]}';   

$str = json_decode($json);
echo $str->city;   // New York
//echo $str->time->Houston;    // How can I access the valus of Houston:  17:34  

?>

Answer 1

將 Json-String 解碼為關聯數組：

$json = '{"flight": "7800", "city": "New York", "time":[{"Houston":"17:34","Los Angeles":"21:23"}]}';
   
$flight = json_decode($json, true);// You get associative array in this case

echo "<br>" . $flight['city'];   // New York
echo "<br>" . $flight['time'][0]['Houston'];
echo "<br>" . $flight['time'][0]['Los Angeles'];