将数据发送到服务器上的 PHP 文件

Question

我正在做一个将数据发送到我的网站的项目，使用 Arduino 和 SIM900，我刚刚制作了一个 AT 代码将数据发送到网站并使用 PHP，但我的 PHP 文件似乎没有收到从 SIM900 AT 命令发送的值，为什么？我的另一个问题是，AT命令将数据发送到网站是否安全？感谢您的帮助，祝你有美好的一天。这是我目前拥有的代码：

这就是我现在为 sim900 准备的：

void setup(){
//Inicialize Serial and SIM
Serial.begin(19200);
SIM900.begin(19200);
delay(7000);
// See if the SIM900 is ready
SIM900.println("AT");
ReceberEFim();                                 
delay(4000);
// SIM card inserted and unlocked?
SIM900.println("AT+CPIN?");
ReceberEFim();
delay(500);              
// Is the SIM card registered?
SIM900.println("AT+CREG?");
ReceberEFim();                            
delay(500);
// Is GPRS attached?
SIM900.println("AT+CGATT?");
ReceberEFim();                           
delay(500);
// Check signal strength - should be 9 or higher
SIM900.println("AT+CSQ");
ReceberEFim();                              
delay(500);
// Set connection type to GPRS
SIM900.println("AT+SAPBR=3,1,"Contype","GPRS"");
ReceberEFim();      
delay(1000);
// Set the APN - this will depend on your network/service provider
SIM900.println("AT+SAPBR=3,1,"APN","claro.com.br"");
ReceberEFim();      
delay(1000);
// Enable GPRS - this will take a moment or two
SIM900.println("AT+SAPBR=1,1");
ReceberEFim();                      
delay(3000);
// Check to see if connection is correct and get your IP address
SIM900.println("AT+SAPBR=2,1");
ReceberEFim();                        
delay(500);
// Enable HTTP mode
SIM900.println("AT+HTTPINIT");
ReceberEFim();                        
delay(2000);
SIM900.println("AT+HTTPPARA="URL","http://mywebsite.com/teste.php?s1=50"");
ReceberEFim();
delay(2000);                               
SIM900.println("AT+HTTPPARA="CID",1");
ReceberEFim();             
delay(500);
SIM900.println("AT+HTTPACTION=0");
ReceberEFim();                   
delay(500);
// Close the HTTP connection
SIM900.println("AT+HTTPTERM");
ReceberEFim();
// Disconnect the GPRS
SIM900.println("AT+SAPBR=0,1");
ReceberEFim();
}

这是 PHP 文件：

<?php 
$sensor1 = $_GET["s1"];
$sensor2 = $_GET["s2"];
$sensor3 = $_GET["s3"];
echo "Sensor 1 = $sensor1";
echo "</br>Sensor 2 = $sensor2";
echo "</br>Sensor 3 = $sensor3";
?>

我希望能够通过SIM900将多个数据发送到我的PHP文件。

Answer 1

您的 url 中没有传递 s2 和 s3，因此您无法访问它，并且会产生错误。

您可以动态检测 s{n} var 或尝试 isset 以检查 var 是否存在。

我认为出于安全原因使用https和会话或令牌会更好，以确保不是其他人试图向您的网站发送随机值。

我希望它能帮助你，