ESP8266 temperature loggers

http://www.instructables.com/id/ESP8266-Wifi-Temperature-Logger/

Arduino | ESP8266
 RX     -> UTXD
 TX     -> URXD
 CH_PD  -> 3.3v

Arduino | DS18B20 
 D2     -> DQ
 RESITOR between DQ and VD0 (3.3v)

*********************************

#include<stdlib.h>

#include <SoftwareSerial.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
#define SSID "SSID"
#define PASS "password"
#define IP "10.10.10.5" // website to talk to...
String GET = "GET /temps/update.php?key=ESP2&tempc=";
SoftwareSerial monitor(10, 11); // RX, TX
void setup()
{
  monitor.begin(9600);
  Serial.begin(9600);
  //sendDebug("***");
  //sendDebug(__FILE__);
  //sendDebug("need a serial to usb attached to pins 10 and 11 to see output");
  sensors.begin();
//  monitor.println(__FILE__);
//  sendDebug("AT+RST");
  delay(2000);
  sendDebug("AT");
  
  delay(5000);
  if(Serial.find("OK")){
    monitor.println("RECEIVED: OK");
    connectWiFi();
  }else{
    monitor.println("Didn't run connectWiFi, at least, didn't get back an OK");
  }
}
void loop(){
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);
  //tempC = DallasTemperature::toFahrenheit(tempC);
  char buffer[10];
  String tempF = dtostrf(tempC, 5, 2, buffer);
  
  updateTemp(tempF);
  monitor.println(tempC);
  delay(60000);
}
void updateTemp(String tenmpF){
  String cmd = "AT+CIPSTART=\"TCP\",\"";
  cmd += IP;
  cmd += "\",80";
  sendDebug(cmd);
  delay(2000);
  if(Serial.find("Error")){
    monitor.print("RECEIVED: Error");
    return;
  }
  cmd = GET;
  cmd += tenmpF;
  cmd += "\r\n";
  Serial.print("AT+CIPSEND=");
  Serial.println(cmd.length());
  if(Serial.find(">")){
    monitor.print(">");
    monitor.print(cmd);
    Serial.print(cmd);
  }else{
    sendDebug("AT+CIPCLOSE");
  }
  if(Serial.find("OK")){
    monitor.println("RECEIVED: OK");
  }else{
    monitor.println("RECEIVED: Error");
  }
}
void sendDebug(String cmd){
  monitor.print("SEND: ");
  monitor.println(cmd);
  Serial.println(cmd);
} 
 
boolean connectWiFi(){
  Serial.println("AT+CWMODE=1");
  delay(2000);
  String cmd="AT+CWJAP=\"";
  cmd+=SSID;
  cmd+="\",\"";
  cmd+=PASS;
  cmd+="\"";
  sendDebug(cmd);
  delay(5000);
  if(Serial.find("OK")){
    monitor.println("Connect RECEIVED: OK");
    return true;
  }else{
    monitor.println("Connect RECEIVED: Error");
    return false;
  }
}

Web site PHP:

<?php

$ESP=$_GET["key"];

$temp=$_GET["tempc"];

$FILE='FILE'.$ESP.".txt";

file_put_contents($FILE,$temp);

echo "<p>";

echo "$ESP | $temp";

echo "</p>";

?>