如何通过UDP将数据通过PHP发送到IP地址？

<?php
$ip = "127.0.0.1"; // 替换为您要发送数据的IP地址
$port = 12345; // 替换为您要发送数据的端口号
$data = "Hello, World!"; // 替换为您要发送的数据

$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
if (!$socket) {
    echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
} else {
    echo "Socket created.\n";
}

$sent = socket_sendto($socket, $data, strlen($data), 0, $ip, $port);
if (!$sent) {
    echo "socket_sendto() failed: reason: " . socket_strerror(socket_last_error($socket)) . "\n";
} else {
    echo "Data sent.\n";
}

socket_close($socket);
?>