在PHP中POST POST Base64编码数据

<?php
// 准备要发送的数据
$data = "Hello, world!";

// 将数据进行Base64编码
$encoded_data = base64_encode($data);

// 准备POST数据
$post_data = array(
    "data" => $encoded_data
);

// 发送POST请求
$url = "https://example.com/post_data.php";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 处理服务器返回的响应
if ($response == "OK") {
    echo "Data sent successfully!";
} else {
    echo "Failed to send data.";
}
?>