31. MySQLiProDeleteWithTable.php

<?php
$db_host = "localhost";
$db_user = "root";
$db_password = "";
$db_name = "test_db";

// Create connection
$conn = mysqli_connect($db_host, $db_user, $db_password, $db_name);

// Check connection
if (!$conn) {
    // die("Connection failed");
    die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully <hr>";

// // sql to delete a record
if(isset($_REQUEST['delete'])){
    $sql = "DELETE FROM student WHERE id= {$_REQUEST['id']}";

    if (mysqli_query($conn, $sql)) {
        echo "Record deleted successfully";
    } else {
        echo "Error deleting record: " . mysqli_error($conn);
    }
}
?>
<!doctype html>
<html lang="en">

<head>
    <title>saminfratech</title>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
        crossorigin="anonymous">
</head>

<body>

    <div class="container">
        <?php
          $sql = "SELECT * FROM student";
          $result = mysqli_query($conn, $sql);
          if(mysqli_num_rows($result) > 0){
            echo '<table class="table">';
              echo "<thead>";
                echo "<tr>";
                  echo "<th>ID</th>";
                  echo "<th>Name</th>";
                  echo "<th>Roll</th>";
                  echo "<th>Address</th>";
                  echo "<th>Action</th>";
                echo "</tr>";
              echo "</thead>";
              echo "<tbody>";
                while($row = mysqli_fetch_assoc($result)){
                  echo "<tr>";
                  echo "<td>" . $row["id"] . "</td>";
                  echo "<td>" . $row["name"] . "</td>";
                  echo "<td>" . $row["roll"] . "</td>";
                  echo "<td>" . $row["address"] . "</td>";
                  echo '<td><form action="" method="POST"><input type="hidden" name="id" value=' . $row["id"] . '><input type="submit" class="btn btn-sm btn-danger" name="delete" value="Delete"></form></td>';
                  echo "</tr>";
                }
            echo "</tbody>";
            echo "</table>";
          } else {
              echo "0 Results";
          }
          ?>
    </div>
    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
        crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
        crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
        crossorigin="anonymous"></script>
</body>

</html>