PHP Post JSON With CURL

<?php
// 请求的URL
$url = "https://www.example.com/api";

// 要发送的JSON数据
$data = array(
    "name" => "John Doe",
    "email" => "johndoe@example.com"
);
$data_json = json_encode($data);

// 初始化CURL
$ch = curl_init($url);

// 设置请求选项
curl_setopt($ch, CURLOPT_POST, 1); // 发送POST请求
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_json); // 设置POST数据
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json')); // 设置请求头

// 执行请求并获取响应
$response = curl_exec($ch);

// 检查请求是否成功
if ($response === false) {
    $error = curl_error($ch);
    echo "请求失败：" . $error;
} else {
    echo "请求成功！响应内容：\n" . $response;
}

// 关闭CURL
curl_close($ch);
?>