├── README.md
├── code
    ├── ESP32_ESP8266_MySQL_Database_PHP.ino
    ├── HTTPS_ESP32_MySQL_Database_PHP.ino
    ├── HTTPS_ESP8266_MySQL_Database_PHP.ino
    ├── SensorData_Table.sql
    ├── esp-data.php
    └── post-esp-data.php
└── project-image.jpg


/README.md:
--------------------------------------------------------------------------------
1 | # ESP32/ESP8266 Insert Data into MySQL Database using PHP and Arduino IDE
2 | 
3 | In this project you’ll build an ESP32 or ESP8266 client that makes an HTTP POST request to a PHP script to insert data (sensor readings) into a MySQL database.
4 | 
5 | Complete project details: https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
6 | 
7 | [![Project Image](https://raw.githubusercontent.com/RuiSantosdotme/ESP32-ESP8266-PHP-MySQL/master/project-image.jpg)](https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/)
8 | 


--------------------------------------------------------------------------------
/code/ESP32_ESP8266_MySQL_Database_PHP.ino:
--------------------------------------------------------------------------------
  1 | /*
  2 |   Rui Santos
  3 |   Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
  4 |   
  5 |   Permission is hereby granted, free of charge, to any person obtaining a copy
  6 |   of this software and associated documentation files.
  7 |   
  8 |   The above copyright notice and this permission notice shall be included in all
  9 |   copies or substantial portions of the Software.
 10 | 
 11 | */
 12 | 
 13 | #ifdef ESP32
 14 |   #include <WiFi.h>
 15 |   #include <HTTPClient.h>
 16 | #else
 17 |   #include <ESP8266WiFi.h>
 18 |   #include <ESP8266HTTPClient.h>
 19 |   #include <WiFiClient.h>
 20 | #endif
 21 | 
 22 | #include <Wire.h>
 23 | #include <Adafruit_Sensor.h>
 24 | #include <Adafruit_BME280.h>
 25 | 
 26 | // Replace with your network credentials
 27 | const char* ssid     = "REPLACE_WITH_YOUR_SSID";
 28 | const char* password = "REPLACE_WITH_YOUR_PASSWORD";
 29 | 
 30 | // REPLACE with your Domain name and URL path or IP address with path
 31 | const char* serverName = "http://example.com/post-esp-data.php";
 32 | 
 33 | // Keep this API Key value to be compatible with the PHP code provided in the project page. 
 34 | // If you change the apiKeyValue value, the PHP file /post-esp-data.php also needs to have the same key 
 35 | String apiKeyValue = "tPmAT5Ab3j7F9";
 36 | 
 37 | String sensorName = "BME280";
 38 | String sensorLocation = "Office";
 39 | 
 40 | /*#include <SPI.h>
 41 | #define BME_SCK 18
 42 | #define BME_MISO 19
 43 | #define BME_MOSI 23
 44 | #define BME_CS 5*/
 45 | 
 46 | #define SEALEVELPRESSURE_HPA (1013.25)
 47 | 
 48 | Adafruit_BME280 bme;  // I2C
 49 | //Adafruit_BME280 bme(BME_CS);  // hardware SPI
 50 | //Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);  // software SPI
 51 | 
 52 | void setup() {
 53 |   Serial.begin(115200);
 54 |   
 55 |   WiFi.begin(ssid, password);
 56 |   Serial.println("Connecting");
 57 |   while(WiFi.status() != WL_CONNECTED) { 
 58 |     delay(500);
 59 |     Serial.print(".");
 60 |   }
 61 |   Serial.println("");
 62 |   Serial.print("Connected to WiFi network with IP Address: ");
 63 |   Serial.println(WiFi.localIP());
 64 | 
 65 |   // (you can also pass in a Wire library object like &Wire2)
 66 |   bool status = bme.begin(0x76);
 67 |   if (!status) {
 68 |     Serial.println("Could not find a valid BME280 sensor, check wiring or change I2C address!");
 69 |     while (1);
 70 |   }
 71 | }
 72 | 
 73 | void loop() {
 74 |   //Check WiFi connection status
 75 |   if(WiFi.status()== WL_CONNECTED){
 76 |     WiFiClient client;
 77 |     HTTPClient http;
 78 |     
 79 |     // Your Domain name with URL path or IP address with path
 80 |     http.begin(client, serverName);
 81 |     
 82 |     // Specify content-type header
 83 |     http.addHeader("Content-Type", "application/x-www-form-urlencoded");
 84 |     
 85 |     // Prepare your HTTP POST request data
 86 |     String httpRequestData = "api_key=" + apiKeyValue + "&sensor=" + sensorName
 87 |                           + "&location=" + sensorLocation + "&value1=" + String(bme.readTemperature())
 88 |                           + "&value2=" + String(bme.readHumidity()) + "&value3=" + String(bme.readPressure()/100.0F) + "";
 89 |     Serial.print("httpRequestData: ");
 90 |     Serial.println(httpRequestData);
 91 |     
 92 |     // You can comment the httpRequestData variable above
 93 |     // then, use the httpRequestData variable below (for testing purposes without the BME280 sensor)
 94 |     //String httpRequestData = "api_key=tPmAT5Ab3j7F9&sensor=BME280&location=Office&value1=24.75&value2=49.54&value3=1005.14";
 95 | 
 96 |     // Send HTTP POST request
 97 |     int httpResponseCode = http.POST(httpRequestData);
 98 |      
 99 |     // If you need an HTTP request with a content type: text/plain
100 |     //http.addHeader("Content-Type", "text/plain");
101 |     //int httpResponseCode = http.POST("Hello, World!");
102 |     
103 |     // If you need an HTTP request with a content type: application/json, use the following:
104 |     //http.addHeader("Content-Type", "application/json");
105 |     //int httpResponseCode = http.POST("{\"value1\":\"19\",\"value2\":\"67\",\"value3\":\"78\"}");
106 |         
107 |     if (httpResponseCode>0) {
108 |       Serial.print("HTTP Response code: ");
109 |       Serial.println(httpResponseCode);
110 |     }
111 |     else {
112 |       Serial.print("Error code: ");
113 |       Serial.println(httpResponseCode);
114 |     }
115 |     // Free resources
116 |     http.end();
117 |   }
118 |   else {
119 |     Serial.println("WiFi Disconnected");
120 |   }
121 |   //Send an HTTP POST request every 30 seconds
122 |   delay(30000);  
123 | }
124 | 


--------------------------------------------------------------------------------
/code/HTTPS_ESP32_MySQL_Database_PHP.ino:
--------------------------------------------------------------------------------
  1 | /*
  2 |   Rui Santos
  3 |   Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
  4 |   
  5 |   Permission is hereby granted, free of charge, to any person obtaining a copy
  6 |   of this software and associated documentation files.
  7 |   
  8 |   The above copyright notice and this permission notice shall be included in all
  9 |   copies or substantial portions of the Software.
 10 | 
 11 | */
 12 | 
 13 | #include <WiFi.h>
 14 | #include <WiFiClientSecure.h>
 15 | #include <HTTPClient.h>
 16 | #include <Wire.h>
 17 | #include <Adafruit_Sensor.h>
 18 | #include <Adafruit_BME280.h>
 19 | 
 20 | // Replace with your network credentials
 21 | const char* ssid     = "REPLACE_WITH_YOUR_SSID";
 22 | const char* password = "REPLACE_WITH_YOUR_PASSWORD";
 23 | 
 24 | // REPLACE with your Domain name and URL path or IP address with path
 25 | const char* serverName = "https://example.com/post-esp-data.php";
 26 | 
 27 | // Keep this API Key value to be compatible with the PHP code provided in the project page. 
 28 | // If you change the apiKeyValue value, the PHP file /post-esp-data.php also needs to have the same key 
 29 | String apiKeyValue = "tPmAT5Ab3j7F9";
 30 | 
 31 | String sensorName = "BME280";
 32 | String sensorLocation = "Office";
 33 | 
 34 | /*#include <SPI.h>
 35 | #define BME_SCK 18
 36 | #define BME_MISO 19
 37 | #define BME_MOSI 23
 38 | #define BME_CS 5*/
 39 | 
 40 | #define SEALEVELPRESSURE_HPA (1013.25)
 41 | 
 42 | Adafruit_BME280 bme;  // I2C
 43 | //Adafruit_BME280 bme(BME_CS);  // hardware SPI
 44 | //Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);  // software SPI
 45 | 
 46 | void setup() {
 47 |   Serial.begin(115200);
 48 |   
 49 |   WiFi.begin(ssid, password);
 50 |   Serial.println("Connecting");
 51 |   while(WiFi.status() != WL_CONNECTED) { 
 52 |     delay(500);
 53 |     Serial.print(".");
 54 |   }
 55 |   Serial.println("");
 56 |   Serial.print("Connected to WiFi network with IP Address: ");
 57 |   Serial.println(WiFi.localIP());
 58 | 
 59 |   // (you can also pass in a Wire library object like &Wire2)
 60 |   bool status = bme.begin(0x76);
 61 |   if (!status) {
 62 |     Serial.println("Could not find a valid BME280 sensor, check wiring or change I2C address!");
 63 |     while (1);
 64 |   }
 65 | }
 66 | 
 67 | void loop() {
 68 |   //Check WiFi connection status
 69 |   if(WiFi.status()== WL_CONNECTED){
 70 |     WiFiClientSecure *client = new WiFiClientSecure;
 71 |     client->setInsecure(); //don't use SSL certificate
 72 |     HTTPClient https;
 73 |     
 74 |     // Your Domain name with URL path or IP address with path
 75 |     https.begin(*client, serverName);
 76 |     
 77 |     // Specify content-type header
 78 |     https.addHeader("Content-Type", "application/x-www-form-urlencoded");
 79 |     
 80 |     // Prepare your HTTP POST request data
 81 |     String httpRequestData = "api_key=" + apiKeyValue + "&sensor=" + sensorName
 82 |                           + "&location=" + sensorLocation + "&value1=" + String(bme.readTemperature())
 83 |                           + "&value2=" + String(bme.readHumidity()) + "&value3=" + String(bme.readPressure()/100.0F) + "";
 84 |     Serial.print("httpRequestData: ");
 85 |     Serial.println(httpRequestData);
 86 |     
 87 |     // You can comment the httpRequestData variable above
 88 |     // then, use the httpRequestData variable below (for testing purposes without the BME280 sensor)
 89 |     //String httpRequestData = "api_key=tPmAT5Ab3j7F9&sensor=BME280&location=Office&value1=24.75&value2=49.54&value3=1005.14";
 90 | 
 91 |     // Send HTTP POST request
 92 |     int httpResponseCode = https.POST(httpRequestData);
 93 |      
 94 |     // If you need an HTTP request with a content type: text/plain
 95 |     //https.addHeader("Content-Type", "text/plain");
 96 |     //int httpResponseCode = https.POST("Hello, World!");
 97 |     
 98 |     // If you need an HTTP request with a content type: application/json, use the following:
 99 |     //https.addHeader("Content-Type", "application/json");
100 |     //int httpResponseCode = https.POST("{\"value1\":\"19\",\"value2\":\"67\",\"value3\":\"78\"}");
101 |     
102 |     if (httpResponseCode>0) {
103 |       Serial.print("HTTP Response code: ");
104 |       Serial.println(httpResponseCode);
105 |     }
106 |     else {
107 |       Serial.print("Error code: ");
108 |       Serial.println(httpResponseCode);
109 |     }
110 |     // Free resources
111 |     https.end();
112 |   }
113 |   else {
114 |     Serial.println("WiFi Disconnected");
115 |   }
116 |   //Send an HTTP POST request every 30 seconds
117 |   delay(30000);  
118 | }
119 | 


--------------------------------------------------------------------------------
/code/HTTPS_ESP8266_MySQL_Database_PHP.ino:
--------------------------------------------------------------------------------
  1 | /*
  2 |   Rui Santos
  3 |   Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
  4 |   
  5 |   Permission is hereby granted, free of charge, to any person obtaining a copy
  6 |   of this software and associated documentation files.
  7 |   
  8 |   The above copyright notice and this permission notice shall be included in all
  9 |   copies or substantial portions of the Software.
 10 | 
 11 | */
 12 | 
 13 | #include <ESP8266WiFi.h>
 14 | #include <ESP8266HTTPClient.h>
 15 | #include <WiFiClientSecureBearSSL.h>
 16 | #include <Wire.h>
 17 | #include <Adafruit_Sensor.h>
 18 | #include <Adafruit_BME280.h>
 19 | 
 20 | // Replace with your network credentials
 21 | const char* ssid     = "REPLACE_WITH_YOUR_SSID";
 22 | const char* password = "REPLACE_WITH_YOUR_PASSWORD";
 23 | 
 24 | // REPLACE with your Domain name and URL path or IP address with path
 25 | const char* serverName = "https://example.com/post-esp-data.php";
 26 | 
 27 | // Keep this API Key value to be compatible with the PHP code provided in the project page. 
 28 | // If you change the apiKeyValue value, the PHP file /post-esp-data.php also needs to have the same key 
 29 | String apiKeyValue = "tPmAT5Ab3j7F9";
 30 | 
 31 | String sensorName = "BME280";
 32 | String sensorLocation = "Office";
 33 | 
 34 | /*#include <SPI.h>
 35 | #define BME_SCK 18
 36 | #define BME_MISO 19
 37 | #define BME_MOSI 23
 38 | #define BME_CS 5*/
 39 | 
 40 | #define SEALEVELPRESSURE_HPA (1013.25)
 41 | 
 42 | Adafruit_BME280 bme;  // I2C
 43 | //Adafruit_BME280 bme(BME_CS);  // hardware SPI
 44 | //Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);  // software SPI
 45 | 
 46 | void setup() {
 47 |   Serial.begin(115200);
 48 |   
 49 |   WiFi.begin(ssid, password);
 50 |   Serial.println("Connecting");
 51 |   while(WiFi.status() != WL_CONNECTED) { 
 52 |     delay(500);
 53 |     Serial.print(".");
 54 |   }
 55 |   Serial.println("");
 56 |   Serial.print("Connected to WiFi network with IP Address: ");
 57 |   Serial.println(WiFi.localIP());
 58 | 
 59 |   // (you can also pass in a Wire library object like &Wire2)
 60 |   bool status = bme.begin(0x76);
 61 |   if (!status) {
 62 |     Serial.println("Could not find a valid BME280 sensor, check wiring or change I2C address!");
 63 |     while (1);
 64 |   }
 65 | }
 66 | 
 67 | void loop() {
 68 |   //Check WiFi connection status
 69 |   if(WiFi.status()== WL_CONNECTED){
 70 | 
 71 |     std::unique_ptr<BearSSL::WiFiClientSecure>client(new BearSSL::WiFiClientSecure);
 72 | 
 73 |     // Ignore SSL certificate validation
 74 |     client->setInsecure();
 75 |     
 76 |     //create an HTTPClient instance
 77 |     HTTPClient https;
 78 |     
 79 |     // Your Domain name with URL path or IP address with path
 80 |     https.begin(*client, serverName);
 81 |     
 82 |     // Specify content-type header
 83 |     https.addHeader("Content-Type", "application/x-www-form-urlencoded");
 84 |     
 85 |     // Prepare your HTTP POST request data
 86 |     String httpRequestData = "api_key=" + apiKeyValue + "&sensor=" + sensorName
 87 |                           + "&location=" + sensorLocation + "&value1=" + String(bme.readTemperature())
 88 |                           + "&value2=" + String(bme.readHumidity()) + "&value3=" + String(bme.readPressure()/100.0F) + "";
 89 |     Serial.print("httpRequestData: ");
 90 |     Serial.println(httpRequestData);
 91 |     
 92 |     // You can comment the httpRequestData variable above
 93 |     // then, use the httpRequestData variable below (for testing purposes without the BME280 sensor)
 94 |     //String httpRequestData = "api_key=tPmAT5Ab3j7F9&sensor=BME280&location=Office&value1=24.75&value2=49.54&value3=1005.14";
 95 | 
 96 |     // Send HTTP POST request
 97 |     int httpResponseCode = https.POST(httpRequestData);
 98 |      
 99 |     // If you need an HTTP request with a content type: text/plain
100 |     //http.addHeader("Content-Type", "text/plain");
101 |     //int httpResponseCode = https.POST("Hello, World!");
102 |     
103 |     // If you need an HTTP request with a content type: application/json, use the following:
104 |     //http.addHeader("Content-Type", "application/json");
105 |     //int httpResponseCode = https.POST("{\"value1\":\"19\",\"value2\":\"67\",\"value3\":\"78\"}");
106 |         
107 |     if (httpResponseCode>0) {
108 |       Serial.print("HTTP Response code: ");
109 |       Serial.println(httpResponseCode);
110 |     }
111 |     else {
112 |       Serial.print("Error code: ");
113 |       Serial.println(httpResponseCode);
114 |     }
115 |     // Free resources
116 |     https.end();
117 |   }
118 |   else {
119 |     Serial.println("WiFi Disconnected");
120 |   }
121 |   //Send an HTTP POST request every 30 seconds
122 |   delay(30000);  
123 | }
124 | 


--------------------------------------------------------------------------------
/code/SensorData_Table.sql:
--------------------------------------------------------------------------------
 1 | CREATE TABLE SensorData (
 2 |     id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
 3 |     sensor VARCHAR(30) NOT NULL,
 4 |     location VARCHAR(30) NOT NULL,
 5 |     value1 VARCHAR(10),
 6 |     value2 VARCHAR(10),
 7 |     value3 VARCHAR(10),
 8 |     reading_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
 9 | )
10 | 


--------------------------------------------------------------------------------
/code/esp-data.php:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html><body>
 3 | <?php
 4 | /*
 5 |   Rui Santos
 6 |   Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
 7 |   
 8 |   Permission is hereby granted, free of charge, to any person obtaining a copy
 9 |   of this software and associated documentation files.
10 |   
11 |   The above copyright notice and this permission notice shall be included in all
12 |   copies or substantial portions of the Software.
13 | */
14 | 
15 | $servername = "localhost";
16 | 
17 | // REPLACE with your Database name
18 | $dbname = "REPLACE_WITH_YOUR_DATABASE_NAME";
19 | // REPLACE with Database user
20 | $username = "REPLACE_WITH_YOUR_USERNAME";
21 | // REPLACE with Database user password
22 | $password = "REPLACE_WITH_YOUR_PASSWORD";
23 | 
24 | // Create connection
25 | $conn = new mysqli($servername, $username, $password, $dbname);
26 | // Check connection
27 | if ($conn->connect_error) {
28 |     die("Connection failed: " . $conn->connect_error);
29 | } 
30 | 
31 | $sql = "SELECT id, sensor, location, value1, value2, value3, reading_time FROM SensorData ORDER BY id DESC";
32 | 
33 | echo '<table cellspacing="5" cellpadding="5">
34 |       <tr> 
35 |         <td>ID</td> 
36 |         <td>Sensor</td> 
37 |         <td>Location</td> 
38 |         <td>Value 1</td> 
39 |         <td>Value 2</td>
40 |         <td>Value 3</td> 
41 |         <td>Timestamp</td> 
42 |       </tr>';
43 |  
44 | if ($result = $conn->query($sql)) {
45 |     while ($row = $result->fetch_assoc()) {
46 |         $row_id = $row["id"];
47 |         $row_sensor = $row["sensor"];
48 |         $row_location = $row["location"];
49 |         $row_value1 = $row["value1"];
50 |         $row_value2 = $row["value2"]; 
51 |         $row_value3 = $row["value3"]; 
52 |         $row_reading_time = $row["reading_time"];
53 |         // Uncomment to set timezone to - 1 hour (you can change 1 to any number)
54 |         //$row_reading_time = date("Y-m-d H:i:s", strtotime("$row_reading_time - 1 hours"));
55 |       
56 |         // Uncomment to set timezone to + 4 hours (you can change 4 to any number)
57 |         //$row_reading_time = date("Y-m-d H:i:s", strtotime("$row_reading_time + 4 hours"));
58 |       
59 |         echo '<tr> 
60 |                 <td>' . $row_id . '</td> 
61 |                 <td>' . $row_sensor . '</td> 
62 |                 <td>' . $row_location . '</td> 
63 |                 <td>' . $row_value1 . '</td> 
64 |                 <td>' . $row_value2 . '</td>
65 |                 <td>' . $row_value3 . '</td> 
66 |                 <td>' . $row_reading_time . '</td> 
67 |               </tr>';
68 |     }
69 |     $result->free();
70 | }
71 | 
72 | $conn->close();
73 | ?> 
74 | </table>
75 | </body>
76 | </html>
77 | 


--------------------------------------------------------------------------------
/code/post-esp-data.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | /*
 4 |   Rui Santos
 5 |   Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-mysql-database-php/
 6 |   
 7 |   Permission is hereby granted, free of charge, to any person obtaining a copy
 8 |   of this software and associated documentation files.
 9 |   
10 |   The above copyright notice and this permission notice shall be included in all
11 |   copies or substantial portions of the Software.
12 | */
13 | 
14 | $servername = "localhost";
15 | 
16 | // REPLACE with your Database name
17 | $dbname = "REPLACE_WITH_YOUR_DATABASE_NAME";
18 | // REPLACE with Database user
19 | $username = "REPLACE_WITH_YOUR_USERNAME";
20 | // REPLACE with Database user password
21 | $password = "REPLACE_WITH_YOUR_PASSWORD";
22 | 
23 | // Keep this API Key value to be compatible with the ESP32 code provided in the project page. 
24 | // If you change this value, the ESP32 sketch needs to match
25 | $api_key_value = "tPmAT5Ab3j7F9";
26 | 
27 | $api_key= $sensor = $location = $value1 = $value2 = $value3 = "";
28 | 
29 | if ($_SERVER["REQUEST_METHOD"] == "POST") {
30 |     $api_key = test_input($_POST["api_key"]);
31 |     if($api_key == $api_key_value) {
32 |         $sensor = test_input($_POST["sensor"]);
33 |         $location = test_input($_POST["location"]);
34 |         $value1 = test_input($_POST["value1"]);
35 |         $value2 = test_input($_POST["value2"]);
36 |         $value3 = test_input($_POST["value3"]);
37 |         
38 |         // Create connection
39 |         $conn = new mysqli($servername, $username, $password, $dbname);
40 |         // Check connection
41 |         if ($conn->connect_error) {
42 |             die("Connection failed: " . $conn->connect_error);
43 |         } 
44 |         
45 |         $sql = "INSERT INTO SensorData (sensor, location, value1, value2, value3)
46 |         VALUES ('" . $sensor . "', '" . $location . "', '" . $value1 . "', '" . $value2 . "', '" . $value3 . "')";
47 |         
48 |         if ($conn->query($sql) === TRUE) {
49 |             echo "New record created successfully";
50 |         } 
51 |         else {
52 |             echo "Error: " . $sql . "<br>" . $conn->error;
53 |         }
54 |     
55 |         $conn->close();
56 |     }
57 |     else {
58 |         echo "Wrong API Key provided.";
59 |     }
60 | 
61 | }
62 | else {
63 |     echo "No data posted with HTTP POST.";
64 | }
65 | 
66 | function test_input($data) {
67 |     $data = trim($data);
68 |     $data = stripslashes($data);
69 |     $data = htmlspecialchars($data);
70 |     return $data;
71 | }
72 | 


--------------------------------------------------------------------------------
/project-image.jpg:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/RuiSantosdotme/ESP32-ESP8266-PHP-MySQL/8ecbf8128b838f79af13a0f61b95a457fd6ee5b9/project-image.jpg


--------------------------------------------------------------------------------