PHP:如何从JSON数组中获取属性？

$json = '{"name":"John", "age":30, "city":"New York"}';
$data = json_decode($json);

// 通过属性访问符号获取属性值
$name = $data->name;
$age = $data->age;
$city = $data->city;

echo "Name: " . $name . "<br>";
echo "Age: " . $age . "<br>";
echo "City: " . $city . "<br>";

Name: John
Age: 30
City: New York

$json = '{"name":"John", "age":30, "city":"New York"}';
$data = json_decode($json, true);

// 通过数组索引获取属性值
$name = $data['name'];
$age = $data['age'];
$city = $data['city'];

echo "Name: " . $name . "<br>";
echo "Age: " . $age . "<br>";
echo "City: " . $city . "<br>";