Arduino Web 客户端，使用 PHP 打开 LED

问：

我需要帮助。 现在mo Arduino连接到Web服务器。在网络服务器上，我会有一个.php页面，可以打开和关闭 LED .

不幸的是，我不知道如何编写.php页面，也不知道如何与Arduino交互。我在互联网上搜索了很多，但我没有找到帮助我的指南。

我已经做了同样的事情，但是使用Arduino Web服务器，它运行良好。我现在希望Arduino是客户端，另一个服务器向他们发送参数。

有人有什么想法吗？

这是我的草图（成功连接到服务器）：

#include <SPI.h>
#include <Ethernet.h>

// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
IPAddress server(xxx,xxx,xxx,xxx);  //
// char server[] = "www.google.com";    // name address for Google (using DNS)

// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192,168,1,177);

// Initialize the Ethernet client library
// with the IP address and port of the server 
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;

void setup() {
 // Open serial communications and wait for port to open:
  Serial.begin(9600);
  pinMode(2, OUTPUT);
   while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  // start the Ethernet connection:
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing forevermore:
    // try to congifure using IP address instead of DHCP:
    Ethernet.begin(mac, ip);
  }
  // give the Ethernet shield a second to initialize:
  delay(1000);
  Serial.println("connecting...");

  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {
    Serial.println("connected");
    // Make a HTTP request:
    // client.println("GET /search?q=arduino HTTP/1.1");
    // client.println("Host: www.google.com");
    // client.println("Connection: close");
    client.println();
    digitalWrite(2, HIGH);
  } 
  else {
    // kf you didn't get a connection to the server:
    Serial.println("connection failed");
  }
}

void loop()
{
  // if there are incoming bytes available 
  // from the server, read them and print them:
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();

    // do nothing forevermore:
    while(true);
  }
}

谢谢！