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Final PHP Code

The PHP code files provide functionality for accessing a database and updating/retrieving sensor data and LED state information stored in database tables. Specifically, the files define a Database class to connect to and interact with the database. Additional files handle updating sensor data and LED state in database tables, retrieving data to display on a web page, and updating the LED states in response to user input.

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aabapurbo2083
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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113 views16 pages

Final PHP Code

The PHP code files provide functionality for accessing a database and updating/retrieving sensor data and LED state information stored in database tables. Specifically, the files define a Database class to connect to and interact with the database. Additional files handle updating sensor data and LED state in database tables, retrieving data to display on a web page, and updating the LED states in response to user input.

Uploaded by

aabapurbo2083
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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//

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> database.php
// PHP code to access the database.
<?php
class Database {
private static $dbName = 'REPLACE_WITH_YOUR_DATABASE_NAME'; // Example:
private static $dbName = 'myDB';
private static $dbHost =
'REPLACE_WITH_YOUR_HOST_NAME_OR_SERVER_NAME'; // Example: private static $dbHost =
'localhost';
private static $dbUsername = 'REPLACE_WITH_YOUR_USERNAME'; // Example:
private static $dbUsername = 'myUserName';
private static $dbUserPassword = 'REPLACE_WITH_YOUR_PASSWORD'; // //
Example: private static $dbUserPassword = 'myPassword';

private static $cont = null;

public function __construct() {


die('Init function is not allowed');
}

public static function connect() {


// One connection through whole application
if ( null == self::$cont ) {
try {
self::$cont = new PDO( "mysql:host=".self::$dbHost.";"."dbname=".self::
$dbName, self::$dbUsername, self::$dbUserPassword);
} catch(PDOException $e) {
die($e->getMessage());
}
}
return self::$cont;
}

public static function disconnect() {


self::$cont = null;
}
}
?>
//
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<

###################################################################################
#########
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########

//
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> updateDHT11data_and_recordtable.php
// PHP code to update and record DHT11 sensor data and LEDs state in table.
<?php
require 'database.php';

//---------------------------------------- Condition to check that POST value is


not empty.
if (!empty($_POST)) {
//........................................ keep track POST values
$id = $_POST['id'];
$temperature = $_POST['temperature'];
$humidity = $_POST['humidity'];
$status_read_sensor_dht11 = $_POST['status_read_sensor_dht11'];
$led_01 = $_POST['led_01'];
$led_02 = $_POST['led_02'];
//........................................

//........................................ Get the time and date.


date_default_timezone_set("Asia/Jakarta"); // Look here for your timezone :
https://www.php.net/manual/en/timezones.php
$tm = date("H:i:s");
$dt = date("Y-m-d");
//........................................

//........................................ Updating the data in the table.


$pdo = Database::connect();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_update'.
// This table is used to store DHT11 sensor data updated by ESP32.
// This table is also used to store the state of the LEDs, the state of the
LEDs is controlled from the "home.php" page.
// This table is operated with the "UPDATE" command, so this table will only
contain one row.
$sql = "UPDATE replace_with_your_table_name SET temperature = ?, humidity = ?,
status_read_sensor_dht11 = ?, time = ?, date = ? WHERE id = ?";
$q = $pdo->prepare($sql);
$q->execute(array($temperature,$humidity,$status_read_sensor_dht11,$tm,$dt,
$id));
Database::disconnect();
//........................................

//........................................ Entering data into a table.


$id_key;
$board = $_POST['id'];
$found_empty = false;

$pdo = Database::connect();

//:::::::: Process to check if "id" is already in use.


while ($found_empty == false) {
$id_key = generate_string_id(10);
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_record'.
// This table is used to store and record DHT11 sensor data updated by ESP32.

// This table is also used to store and record the state of the LEDs, the
state of the LEDs is controlled from the "home.php" page.
// This table is operated with the "INSERT" command, so this table will
contain many rows.
// Before saving and recording data in this table, the "id" will be checked
first, to ensure that the "id" that has been created has not been used in the
table.
$sql = 'SELECT * FROM replace_with_your_table_name WHERE id="' . $id_key .
'"';
$q = $pdo->prepare($sql);
$q->execute();

if (!$data = $q->fetch()) {
$found_empty = true;
}
}
//::::::::

//:::::::: The process of entering data into a table.


$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_record'.
// This table is used to store and record DHT11 sensor data updated by ESP32.
// This table is also used to store and record the state of the LEDs, the state
of the LEDs is controlled from the "home.php" page.
// This table is operated with the "INSERT" command, so this table will contain
many rows.
$sql = "INSERT INTO replace_with_your_table_name
(id,board,temperature,humidity,status_read_sensor_dht11,LED_01,LED_02,time,date)
values(?, ?, ?, ?, ?, ?, ?, ?, ?)";
$q = $pdo->prepare($sql);
$q->execute(array($id_key,$board,$temperature,$humidity,
$status_read_sensor_dht11,$led_01,$led_02,$tm,$dt));
//::::::::

Database::disconnect();
//........................................
}
//----------------------------------------

//---------------------------------------- Function to create "id" based on


numbers and characters.
function generate_string_id($strength = 16) {
$permitted_chars =
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$input_length = strlen($permitted_chars);
$random_string = '';
for($i = 0; $i < $strength; $i++) {
$random_character = $permitted_chars[mt_rand(0, $input_length - 1)];
$random_string .= $random_character;
}
return $random_string;
}
//----------------------------------------
?>
//
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<

###################################################################################
#########
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########

//
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> getdata.php
// PHP file to get DHT11 sensor data and LEDs state stored in table in database to
display on "home.php" page.
// This file is also accessed by ESP32 to get the state of the LEDs, the state of
the LEDs is controlled from the "home.php" page.
<?php
include 'database.php';

//---------------------------------------- Condition to check that POST value is


not empty.
if (!empty($_POST)) {
// keep track post values
$id = $_POST['id'];

$myObj = (object)array();

//........................................
$pdo = Database::connect();
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_update'.
// This table is used to store DHT11 sensor data updated by ESP32.
// This table is also used to store the state of the LEDs, the state of the
LEDs is controlled from the "home.php" page.
// To store data, this table is operated with the "UPDATE" command, so this
table contains only one row.
$sql = 'SELECT * FROM replace_with_your_table_name WHERE id="' . $id . '"';
foreach ($pdo->query($sql) as $row) {
$date = date_create($row['date']);
$dateFormat = date_format($date,"d-m-Y");

$myObj->id = $row['id'];
$myObj->temperature = $row['temperature'];
$myObj->humidity = $row['humidity'];
$myObj->status_read_sensor_dht11 = $row['status_read_sensor_dht11'];
$myObj->LED_01 = $row['LED_01'];
$myObj->LED_02 = $row['LED_02'];
$myObj->ls_time = $row['time'];
$myObj->ls_date = $dateFormat;

$myJSON = json_encode($myObj);

echo $myJSON;
}
Database::disconnect();
//........................................
}
//----------------------------------------
?>
//
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<

###################################################################################
#########
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########

//
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> updateLEDs.php
// PHP code to update the state of the LEDs, the state of the LEDs is controlled
from the "home.php" page.
<?php
require 'database.php';

//---------------------------------------- Condition to check that POST value is


not empty.
if (!empty($_POST)) {
//........................................ keep track post values
$id = $_POST['id'];
$lednum = $_POST['lednum'];
$ledstate = $_POST['ledstate'];
//........................................

//........................................
$pdo = Database::connect();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_update'.
// This table is used to store DHT11 sensor data updated by ESP32.
// This table is also used to store the state of the LEDs, the state of the
LEDs is controlled from the "home.php" page.
// To store data, this table is operated with the "UPDATE" command, so this
table contains only one row.
$sql = "UPDATE replace_with_your_table_name SET " . $lednum . " = ? WHERE id
= ?";
$q = $pdo->prepare($sql);
$q->execute(array($ledstate,$id));
Database::disconnect();
//........................................
}
//----------------------------------------
?>
//
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########

//
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> home.php
// PHP/HTML code to display DHT11 sensor data and control LEDs state.
<!DOCTYPE HTML>
<html>
<head>
<title>ESP32 WITH MYSQL DATABASE</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-
fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr"
crossorigin="anonymous">
<link rel="icon" href="data:,">
<style>
html {font-family: Arial; display: inline-block; text-align: center;}
p {font-size: 1.2rem;}
h4 {font-size: 0.8rem;}
body {margin: 0;}
.topnav {overflow: hidden; background-color: #0c6980; color: white; font-
size: 1.2rem;}
.content {padding: 5px; }
.card {background-color: white; box-shadow: 0px 0px 10px 1px
rgba(140,140,140,.5); border: 1px solid #0c6980; border-radius: 15px;}
.card.header {background-color: #0c6980; color: white; border-bottom-right-
radius: 0px; border-bottom-left-radius: 0px; border-top-right-radius: 12px; border-
top-left-radius: 12px;}
.cards {max-width: 700px; margin: 0 auto; display: grid; grid-gap: 2rem;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));}
.reading {font-size: 1.3rem;}
.packet {color: #bebebe;}
.temperatureColor {color: #fd7e14;}
.humidityColor {color: #1b78e2;}
.statusreadColor {color: #702963; font-size:12px;}
.LEDColor {color: #183153;}

/* ----------------------------------- Toggle Switch */


.switch {
position: relative;
display: inline-block;
width: 50px;
height: 24px;
}

.switch input {display:none;}

.sliderTS {
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #D3D3D3;
-webkit-transition: .4s;
transition: .4s;
border-radius: 34px;
}

.sliderTS:before {
position: absolute;
content: "";
height: 16px;
width: 16px;
left: 4px;
bottom: 4px;
background-color: #f7f7f7;
-webkit-transition: .4s;
transition: .4s;
border-radius: 50%;
}

input:checked + .sliderTS {
background-color: #00878F;
}

input:focus + .sliderTS {
box-shadow: 0 0 1px #2196F3;
}

input:checked + .sliderTS:before {
-webkit-transform: translateX(26px);
-ms-transform: translateX(26px);
transform: translateX(26px);
}

.sliderTS:after {
content:'OFF';
color: white;
display: block;
position: absolute;
transform: translate(-50%,-50%);
top: 50%;
left: 70%;
font-size: 10px;
font-family: Verdana, sans-serif;
}

input:checked + .sliderTS:after {
left: 25%;
content:'ON';
}

input:disabled + .sliderTS {
opacity: 0.3;
cursor: not-allowed;
pointer-events: none;
}
/* ----------------------------------- */
</style>
</head>

<body>
<div class="topnav">
<h3>ESP32 WITH MYSQL DATABASE</h3>
</div>

<br>

<!-- __ DISPLAYS MONITORING AND CONTROLLING


___________________________________________________________________________________
_________ -->
<div class="content">
<div class="cards">

<!-- == MONITORING
===================================================================================
===== -->
<div class="card">
<div class="card header">
<h3 style="font-size: 1rem;">MONITORING</h3>
</div>

<!-- Displays the humidity and temperature values received from ESP32.
*** -->
<h4 class="temperatureColor"><i class="fas fa-thermometer-half"></i>
TEMPERATURE</h4>
<p class="temperatureColor"><span class="reading"><span
id="ESP32_01_Temp"></span> &deg;C</span></p>
<h4 class="humidityColor"><i class="fas fa-tint"></i> HUMIDITY</h4>
<p class="humidityColor"><span class="reading"><span
id="ESP32_01_Humd"></span> &percnt;</span></p>
<!--
*********************************************************************** -->

<p class="statusreadColor"><span>Status Read Sensor DHT11 : </span><span


id="ESP32_01_Status_Read_DHT11"></span></p>
</div>
<!--
===================================================================================
==================== -->

<!-- == CONTROLLING
===================================================================================
===== -->
<div class="card">
<div class="card header">
<h3 style="font-size: 1rem;">CONTROLLING</h3>
</div>

<!-- Buttons for controlling the LEDs on Slave 2.


************************** -->
<h4 class="LEDColor"><i class="fas fa-lightbulb"></i> LED 1</h4>
<label class="switch">
<input type="checkbox" id="ESP32_01_TogLED_01"
onclick="GetTogBtnLEDState('ESP32_01_TogLED_01')">
<div class="sliderTS"></div>
</label>
<h4 class="LEDColor"><i class="fas fa-lightbulb"></i> LED 2</h4>
<label class="switch">
<input type="checkbox" id="ESP32_01_TogLED_02"
onclick="GetTogBtnLEDState('ESP32_01_TogLED_02')">
<div class="sliderTS"></div>
</label>
<!--
*********************************************************************** -->
</div>
<!--
===================================================================================
==================== -->

</div>
</div>

<br>

<div class="content">
<div class="cards">
<div class="card header" style="border-radius: 15px;">
<h3 style="font-size: 0.7rem;">LAST TIME RECEIVED DATA FROM ESP32
[ <span id="ESP32_01_LTRD"></span> ]</h3>
<button onclick="window.open('recordtable.php', '_blank');">Open Record
Table</button>
<h3 style="font-size: 0.7rem;"></h3>
</div>
</div>
</div>
<!--
___________________________________________________________________________________
________________________________________________ -->

<script>
//------------------------------------------------------------
document.getElementById("ESP32_01_Temp").innerHTML = "NN";
document.getElementById("ESP32_01_Humd").innerHTML = "NN";
document.getElementById("ESP32_01_Status_Read_DHT11").innerHTML = "NN";
document.getElementById("ESP32_01_LTRD").innerHTML = "NN";
//------------------------------------------------------------

Get_Data("esp32_01");

setInterval(myTimer, 5000);

//------------------------------------------------------------
function myTimer() {
Get_Data("esp32_01");
}
//------------------------------------------------------------

//------------------------------------------------------------
function Get_Data(id) {
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
const myObj = JSON.parse(this.responseText);
if (myObj.id == "esp32_01") {
document.getElementById("ESP32_01_Temp").innerHTML =
myObj.temperature;
document.getElementById("ESP32_01_Humd").innerHTML = myObj.humidity;
document.getElementById("ESP32_01_Status_Read_DHT11").innerHTML =
myObj.status_read_sensor_dht11;
document.getElementById("ESP32_01_LTRD").innerHTML = "Time : " +
myObj.ls_time + " | Date : " + myObj.ls_date + " (dd-mm-yyyy)";
if (myObj.LED_01 == "ON") {
document.getElementById("ESP32_01_TogLED_01").checked = true;
} else if (myObj.LED_01 == "OFF") {
document.getElementById("ESP32_01_TogLED_01").checked = false;
}
if (myObj.LED_02 == "ON") {
document.getElementById("ESP32_01_TogLED_02").checked = true;
} else if (myObj.LED_02 == "OFF") {
document.getElementById("ESP32_01_TogLED_02").checked = false;
}
}
}
};
xmlhttp.open("POST","getdata.php",true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-
urlencoded");
xmlhttp.send("id="+id);
}
//------------------------------------------------------------

//------------------------------------------------------------
function GetTogBtnLEDState(togbtnid) {
if (togbtnid == "ESP32_01_TogLED_01") {
var togbtnchecked = document.getElementById(togbtnid).checked;
var togbtncheckedsend = "";
if (togbtnchecked == true) togbtncheckedsend = "ON";
if (togbtnchecked == false) togbtncheckedsend = "OFF";
Update_LEDs("esp32_01","LED_01",togbtncheckedsend);
}
if (togbtnid == "ESP32_01_TogLED_02") {
var togbtnchecked = document.getElementById(togbtnid).checked;
var togbtncheckedsend = "";
if (togbtnchecked == true) togbtncheckedsend = "ON";
if (togbtnchecked == false) togbtncheckedsend = "OFF";
Update_LEDs("esp32_01","LED_02",togbtncheckedsend);
}
}
//------------------------------------------------------------

//------------------------------------------------------------
function Update_LEDs(id,lednum,ledstate) {
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
//document.getElementById("demo").innerHTML = this.responseText;
}
}
xmlhttp.open("POST","updateLEDs.php",true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-
urlencoded");
xmlhttp.send("id="+id+"&lednum="+lednum+"&ledstate="+ledstate);
}
//------------------------------------------------------------
</script>
</body>
</html>
//
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<

###################################################################################
#########
###################################################################################
#########
###################################################################################
#########
###################################################################################
#########

//
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>> recordtable.php
// PHP/HTML code to display a record table of DHT11 sensor data and LEDs state.
<!DOCTYPE HTML>
<html>
<head>
<title>ESP32 WITH MYSQL DATABASE</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
html {font-family: Arial; display: inline-block; text-align: center;}
p {font-size: 1.2rem;}
h4 {font-size: 0.8rem;}
body {margin: 0;}
/* ----------------------------------- TOPNAV STYLE */
.topnav {overflow: hidden; background-color: #0c6980; color: white; font-
size: 1.2rem;}
/* ----------------------------------- */

/* ----------------------------------- TABLE STYLE */


.styled-table {
border-collapse: collapse;
margin-left: auto;
margin-right: auto;
font-size: 0.9em;
font-family: sans-serif;
min-width: 400px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
border-radius: 0.5em;
overflow: hidden;
width: 90%;
}

.styled-table thead tr {
background-color: #0c6980;
color: #ffffff;
text-align: left;
}

.styled-table th {
padding: 12px 15px;
text-align: left;
}

.styled-table td {
padding: 12px 15px;
text-align: left;
}

.styled-table tbody tr:nth-of-type(even) {


background-color: #f3f3f3;
}

.styled-table tbody tr.active-row {


font-weight: bold;
color: #009879;
}

.bdr {
border-right: 1px solid #e3e3e3;
border-left: 1px solid #e3e3e3;
}

td:hover {background-color: rgba(12, 105, 128, 0.21);}


tr:hover {background-color: rgba(12, 105, 128, 0.15);}
.styled-table tbody tr:nth-of-type(even):hover {background-color: rgba(12,
105, 128, 0.15);}
/* ----------------------------------- */

/* ----------------------------------- BUTTON STYLE */


.btn-group .button {
background-color: #0c6980; /* Green */
border: 1px solid #e3e3e3;
color: white;
padding: 5px 8px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 14px;
cursor: pointer;
float: center;
}
.btn-group .button:not(:last-child) {
border-right: none; /* Prevent double borders */
}

.btn-group .button:hover {
background-color: #094c5d;
}

.btn-group .button:active {
background-color: #0c6980;
transform: translateY(1px);
}

.btn-group .button:disabled,
.button.disabled{
color:#fff;
background-color: #a0a0a0;
cursor: not-allowed;
pointer-events:none;
}
/* ----------------------------------- */
</style>
</head>

<body>
<div class="topnav">
<h3>ESP32 WITH MYSQL DATABASE</h3>
</div>

<br>

<h3 style="color: #0c6980;">ESP32_01 RECORD DATA TABLE</h3>

<table class="styled-table" id= "table_id">


<thead>
<tr>
<th>NO</th>
<th>ID</th>
<th>BOARD</th>
<th>TEMPERATURE (°C)</th>
<th>HUMIDITY (%)</th>
<th>STATUS READ SENSOR DHT11</th>
<th>LED 01</th>
<th>LED 02</th>
<th>TIME</th>
<th>DATE (dd-mm-yyyy)</th>
</tr>
</thead>
<tbody id="tbody_table_record">
<?php
include 'database.php';
$num = 0;
//------------------------------------------------------------ The
process for displaying a record table containing the DHT11 sensor data and the
state of the LEDs.
$pdo = Database::connect();
// replace_with_your_table_name, on this project I use the table name
'esp32_table_dht11_leds_record'.
// This table is used to store and record DHT11 sensor data updated by
ESP32.
// This table is also used to store and record the state of the LEDs, the
state of the LEDs is controlled from the "home.php" page.
// To store data, this table is operated with the "INSERT" command, so
this table will contain many rows.
$sql = 'SELECT * FROM replace_with_your_table_name ORDER BY date, time';
foreach ($pdo->query($sql) as $row) {
$date = date_create($row['date']);
$dateFormat = date_format($date,"d-m-Y");
$num++;
echo '<tr>';
echo '<td>'. $num . '</td>';
echo '<td class="bdr">'. $row['id'] . '</td>';
echo '<td class="bdr">'. $row['board'] . '</td>';
echo '<td class="bdr">'. $row['temperature'] . '</td>';
echo '<td class="bdr">'. $row['humidity'] . '</td>';
echo '<td class="bdr">'. $row['status_read_sensor_dht11'] . '</td>';
echo '<td class="bdr">'. $row['LED_01'] . '</td>';
echo '<td class="bdr">'. $row['LED_02'] . '</td>';
echo '<td class="bdr">'. $row['time'] . '</td>';
echo '<td>'. $dateFormat . '</td>';
echo '</tr>';
}
Database::disconnect();
//------------------------------------------------------------
?>
</tbody>
</table>

<br>

<div class="btn-group">
<button class="button" id="btn_prev" onclick="prevPage()">Prev</button>
<button class="button" id="btn_next" onclick="nextPage()">Next</button>
<div style="display: inline-block; position:relative; border: 0px solid
#e3e3e3; float: center; margin-left: 2px;;">
<p style="position:relative; font-size: 14px;"> Table : <span
id="page"></span></p>
</div>
<select name="number_of_rows" id="number_of_rows">
<option value="10">10</option>
<option value="25">25</option>
<option value="50">50</option>
<option value="100">100</option>
</select>
<button class="button" id="btn_apply"
onclick="apply_Number_of_Rows()">Apply</button>
</div>

<br>

<script>
//------------------------------------------------------------
var current_page = 1;
var records_per_page = 10;
var l = document.getElementById("table_id").rows.length
//------------------------------------------------------------

//------------------------------------------------------------
function apply_Number_of_Rows() {
var x = document.getElementById("number_of_rows").value;
records_per_page = x;
changePage(current_page);
}
//------------------------------------------------------------

//------------------------------------------------------------
function prevPage() {
if (current_page > 1) {
current_page--;
changePage(current_page);
}
}
//------------------------------------------------------------

//------------------------------------------------------------
function nextPage() {
if (current_page < numPages()) {
current_page++;
changePage(current_page);
}
}
//------------------------------------------------------------

//------------------------------------------------------------
function changePage(page) {
var btn_next = document.getElementById("btn_next");
var btn_prev = document.getElementById("btn_prev");
var listing_table = document.getElementById("table_id");
var page_span = document.getElementById("page");

// Validate page
if (page < 1) page = 1;
if (page > numPages()) page = numPages();

[...listing_table.getElementsByTagName('tr')].forEach((tr)=>{
tr.style.display='none'; // reset all to not display
});
listing_table.rows[0].style.display = ""; // display the title row

for (var i = (page-1) * records_per_page + 1; i < (page * records_per_page)


+ 1; i++) {
if (listing_table.rows[i]) {
listing_table.rows[i].style.display = ""
} else {
continue;
}
}

page_span.innerHTML = page + "/" + numPages() + " (Total Number of Rows = "


+ (l-1) + ") | Number of Rows : ";

if (page == 0 && numPages() == 0) {


btn_prev.disabled = true;
btn_next.disabled = true;
return;
}
if (page == 1) {
btn_prev.disabled = true;
} else {
btn_prev.disabled = false;
}

if (page == numPages()) {
btn_next.disabled = true;
} else {
btn_next.disabled = false;
}
}
//------------------------------------------------------------

//------------------------------------------------------------
function numPages() {
return Math.ceil((l - 1) / records_per_page);
}
//------------------------------------------------------------

//------------------------------------------------------------
window.onload = function() {
var x = document.getElementById("number_of_rows").value;
records_per_page = x;
changePage(current_page);
};
//------------------------------------------------------------
</script>
</body>
</html>
//
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