I'm having problems with my Arduino UNO and the ESP8266 module. I need to send values from Arduino to my PHP web page in this way:

http://www.server.com/km/db.php?id=53

the ESP8266 module is working fine, it powers up and connects to my Wi-Fi without problems, but I'm not able to send the values to my PHP page.

This is my code:

    #include "SoftwareSerial.h"

String ssid ="NETGEAR80";
String password="mypassword";

SoftwareSerial esp(10, 11);// RX, TX

String data;

String server = "http://www.server.com"; 
String uri = "/km/db.php";// 
int DHpin = 8;//sensor pin
byte dat [5];
String temp ,hum;

void setup() {
pinMode (DHpin, OUTPUT);
esp.begin(9600);
Serial.begin(9600);
reset();
connectWifi();

}   


void reset() {
esp.println("AT+CWMODE_DEF=1");
esp.println("AT+RST");    
delay(1000);
if(esp.find((char*)"OK") ) Serial.println("Module Reset");

}   


void connectWifi() {
Serial.println("Collegamento");
String cmd = "AT+CWJAP_CUR=\"" +ssid+"\",\"" + password + "\"";
esp.println(cmd);
Serial.println(cmd);    
delay(4000);
if(esp.find((char*)"OK")) {
Serial.println("Connected!");
}
else {
connectWifi();
Serial.println("Cannot connect to wifi"); }
}


void loop () {

temp=11;

data = "id=" + temp;// data sent must be under this form 

httppost();

delay(1000);

}

void httppost () {

esp.println("AT+CIPSTART=\"TCP\",\"" + server + "\",80");//start a TCP connection.
if( esp.find((char*)"OK")) {
Serial.println("TCP connection ready");
} delay(1000);

String postRequest =
"POST " + uri + " HTTP/1.0\r\n" + "Host: " + server + "\r\n" + "Accept: *" + "/" + "*\r\n" + "Content-Length: " + data.length() + "\r\n" + "Content-Type: application/x-www-form-urlencoded\r\n" + "\r\n" + data;

Serial.println(postRequest);

String sendCmd = "AT+CIPSEND=";//determine the number of caracters to be sent.

esp.print(sendCmd);

esp.println(postRequest.length() );

delay(500);


if(esp.find((char*)">")) { Serial.println("Sending.."); esp.print(postRequest);

if(esp.find((char*)"SEND OK")) { Serial.println("Packet sent");

while (esp.available()) {

String tmpResp = esp.readString();

Serial.println(tmpResp);

}

// close the connection

esp.println("AT+CIPCLOSE");

}

}
}

This is the output on the Serial Terminal:

AT+CWJAP_CUR="NETGEAR80","my_password"
Connected!
POST /km/db.php HTTP/1.0
Host: http://www.server.com
Accept: */*
Content-Length: 17
Content-Type: application/x-www-form-urlencoded

The code works fine till the POST, but then no answer is received.

This condition:

if(esp.find((char*)">")) { Serial.println("Sending.."); esp.print(postRequest);

is never verified.

I can't understand if there is something wrong with the POST format, with the URL or something else.

Can you help me, please?