php-course/81. MySQLiOOPPrepUpdateWithFormTable.php at main · cmmishra9/php-course · GitHub

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<?php
$db_host = "localhost";
$db_user = "root";
$db_password = "";
$db_name = "test_db";

// Create Connection
$conn = new mysqli($db_host, $db_user, $db_password, $db_name);

// Check Connection
if($conn->connect_error){
  die("Connection Failed");
}
echo "Connected Successfully <hr>";

if(isset($_REQUEST['update'])){
  // checking for empty field
  if(($_REQUEST['name'] == "") || ($_REQUEST['roll'] == "") || ($_REQUEST['address'] == "")){
    echo"<small>Fill all fields..</small><hr>";
  }
  else {
      // Update SQL statement
      $sql = "UPDATE student SET name = ?, roll = ?, address = ? WHERE id= ?";

      // Prepared Statement
      $result = $conn->prepare($sql);

      if($result) {

          // Bind Variables to Prepared Statement as Parameters
          $result->bind_param('sisi', $name, $roll, $address, $id);

          // Variables and values
          $name = $_REQUEST['name'];
          $roll = $_REQUEST['roll'];
          $address = $_REQUEST['address'];
          $id = $_REQUEST['id'];

          // Execute Prepared statement
          $result->execute();

          // Number of row affected
          echo $result->affected_rows . " Row Updated <br>" ;
      }
      // Close prepared statement
      $result->close();
    }
  }

?>


<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <!-- 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">
  <title>saminfratech</title>
</head>

<body>
  <div class="container">
    <div class="row">
      <div class="col-sm-4">
        <?php
            if(isset($_REQUEST['edit'])){
                // SELECT with WHERE
                $sql = "SELECT * FROM student WHERE id = ?";

                // Prepare Statement
                $result = $conn->prepare($sql);

                // Bind parameter
                $result->bind_param('i', $id);

                $id = $_REQUEST['id'];

                // Bind Result set in variables
                $result->bind_result($id, $name, $roll, $address);

                // Execute statement
                $result->execute();

                // Fetch Single row data
                $result->fetch();

                // close prepared statement
                $result->close();

            }
        ?>
        <form action="" method="POST">
          <div class="form-group">
            <label for="name">Name</label>
            <input type="text" class="form-control" name="name" id="name" value="<?php if(isset($name)){ echo $name;} ?>">
          </div>
          <div class="form-group">
            <label for="roll">Roll</label>
            <input type="text" class="form-control" name="roll" id="roll" value="<?php if(isset($roll)){echo $roll;} ?>">
          </div>
          <div class="form-group">
            <label for="address">Address</label>
            <input type="text" class="form-control" name="address" id="address" value="<?php if(isset($address)){ echo $address;} ?>">
          </div>
          <input type="hidden" name="id" value="<?php echo $id ?>">
          <button type="submit" class="btn btn-success" name="update">Update</button>
        </form>

      </div>
      <div class="col-sm-6 offset-sm-2">
        <?php
                // SELECT All Data
                $sql = "SELECT * FROM student";

                // Prepared Statement
                $result = $conn->prepare($sql);

                // Bind Result set in variables
                $result->bind_result($id, $name, $roll, $address);

                // Execute Prepared statement
                $result->execute();

                // Store Result
                $result->store_result();

                if($result->num_rows > 0){
                    echo '<table class="table">';
                    echo "<thead>";
                        echo "<tr>";
                        echo "<th>ID</th>";
                        echo "<th>Name</th>";
                        echo "<th>Roll</th>";
                        echo "<th>Address</th>";
                        echo "<th>Action</th>";
                        echo "</tr>";
                    echo "</thead>";
                    echo "<tbody>";
                        // Fetch all table data
                        while($result->fetch()){
                            echo "<tr>";
                            echo "<td>" . $id . "</td>";
                            echo "<td>" . $name . "</td>";
                            echo "<td>" . $roll . "</td>";
                            echo "<td>" . $address . "</td>";
                            echo '<td><form action="" method="POST"><input type="hidden" name="id" value=' . $id . '><input type="submit" class="btn btn-sm btn-warning" name="edit" value="Edit"></form></td>';
                            echo "</tr>";
                        }
                        echo "</tbody>";
                        echo "</table>";
                    } else {
                        echo "0 Results";
                    }
          ?>
      </div>
    </div>
  </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>
<?php
  // close prepared statement
  $result->close();

  // Close Connection
  $conn->close();
?>

</html>