Ajax Introduction Tutorial in PHP

 <?php

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "test";

// Create Connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check Connection
if ($conn->connect_error) {
    die("Connection Failed : " . $conn->connect_error);
}
Above File is mysqli_conn.php File




Below File is show-data.php File
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Show Data</title>
</head>

<body>
    <table id="main" border="0" cellspacing="0">
        <tr>
            <td id="header">
                <h1>PHP with Ajax</h1>
            </td>
        </tr>
        <tr>
            <td id="table-load">
                <input type="button" id="load-button" value="Load Data">
            </td>
        </tr>
        <tr>
            <td id="table-data">
            </td>
        </tr>
    </table>

    <script type="text/javascript" src="js/jquery-3.7.1.min.js"></script>

    <script type="text/javascript">
        // When we use Ajax, at that time we don't need to use Form and if we use Form then we don't need to specity "method=POST OR GET"
        $(document).ready(function() {
            $("#load-button").on("click", function() {
                $.ajax({
                    url: "ajax-load.php",
                    type: "POST",
                    success: function(data) {
                        $("#table-data").html(data);
                    }
                });
            });
        });
    </script>
</body>

</html>




Below File is ajax-load.php File
<?php
include("mysqli_conn.php");

$sql = "SELECT * FROM students";
$result = $conn->query($sql);
$output = "";

if ($result->num_rows > 0) {
    $output = "<table border='1' width='100%' cellspacing='0' cellpadding='10px'>
                <tr>
                    <th>Id</th>
                    <th>Student Name</th>
                    <th>Age</th>
                    <th>City</th>
                </tr>";

    while ($row = $result->fetch_assoc()) {
        $output .= "<tr><td>{$row["id"]}</td><td>{$row["student_name"]}</td><td>{$row["age"]}</td><td>{$row["city"]}</td></tr>";
    }
    $output .= "</table>";

    echo $output;
} else {
    echo "<h2>No Record Found.</h2>";
}
$conn->close();







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