PHP编程技巧：高效处理JSON数据中的Unicode转换

$data = ["name" => "张三", "age" => 25];
$json = json_encode($data, JSON_UNESCAPED_UNICODE);

echo $json;
// 输出：{"name":"张三","age":25}

$jsonData = '{"name":"u5f20u4e09","age":25}';
$data = json_decode($jsonData, true);

foreach ($data as $key => $value) {
    if (is_string($value)) {
        $data[$key] = mb_convert_encoding($value, 'UTF-8', 'UTF-16');
    }
}

echo json_encode($data, JSON_UNESCAPED_UNICODE);
// 输出：{"name":"张三","age":25}

$jsonData = '{"name":"u5f20u4e09","age":25}';
$data = json_decode($jsonData, true);

// 对含有Unicode字符的值进行特殊处理
foreach ($data as $key => $value) {
    if (is_string($value)) {
        // 在这里对含有Unicode字符的值进行处理
        $data[$key] = str_replace("张三", "李四", $value);
    }
}

echo json_encode($data, JSON_UNESCAPED_UNICODE);
// 输出：{"name":"李四","age":25}