PHP の POST メソッドは配列を保存できますか?

// 前端代码
<script>
    var data = {
        "name": "Alice",
        "age": 25,
        "interests": ["Reading", "Traveling", "Photography"]
    };

    var json_data = JSON.stringify(data);

    var xhr = new XMLHttpRequest();
    xhr.open("POST", "process_data.php", true);
    xhr.setRequestHeader("Content-Type", "application/json");
    xhr.send(json_data);
</script>

// 后端代码 - process_data.php
<?php
// 接收JSON格式的数据
$json_data = file_get_contents('php://input');

// 将JSON格式数据转换为数组
$data = json_decode($json_data, true);

// 处理数组数据
$name = $data["name"];
$age = $data["age"];
$interests = $data["interests"];

// 输出数据
echo "Name: " . $name . "<br>";
echo "Age: " . $age . "<br>";
echo "Interests: ";
foreach($interests as $interest){
    echo $interest . ", ";
}
?>