从Ethernet-Shield Arduino运行远程PHP脚本

Question

我有一个外部web服务器上的PHP脚本。如果我在浏览器中查看www.example.com/test/myphp.php，服务器会很好地运行脚本。现在，我希望服务器在Arduino提示时运行该脚本，而不是在我的浏览器中查看该脚本时运行。我想让Arduino远程触发脚本运行。

我完全是一个服务器/ php / web的新手，所以任何提示都将不胜感激，特别是对于GET synatx (如果这是正确的命令？)。Arduino有一个以太网屏，可以很好地连接到服务器。下面的代码正确连接，但与我在浏览器中打开www.example.com/test/myphp.php时不同，当从Arduino访问PHP文件时，它实际上并不运行:(

你有什么建议可以让我修改这个代码，让PHP文件在我的Arduino命令下运行吗？

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

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

char server[] = "www.example.com";    

// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192,168,0,177);

// 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);

  // start the Ethernet connection:
  if (Ethernet.begin(mac) == 0) {
    Serial.println("SERIAL: Failed to configure Ethernet using DHCP");
  }

  // give the Ethernet shield a second to initialize:
  delay(1000);

  Serial.println("SERIAL: connecting...");

  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {

     client.print("GET /test/myphp.php");
     client.println(" HTTP/1.1");
     client.println("Host: www.example.com");
     client.println("User-Agent: Arduino");
     client.println("Accept: text/html");
     client.println("Connection: close");
     client.println();

  } 
  else {
    // if you didn't get a connection to the server:
    Serial.println("SERIAL: connection failed");
  }
}

void loop()
{
  // if there are incoming bytes available, 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);
  }
}

Answer 1

不能确定这一点，但是..我认为你应该在循环中包含这段代码。而不是在外面。

 if (client.connect(server, 80)) {

     client.print("GET /test/myphp.php");
     client.println(" HTTP/1.1");
     client.println("Host: www.example.com");
     client.println("User-Agent: Arduino");
     client.println("Accept: text/html");
     client.println("Connection: close");
     client.println();
}