In this chapter we can learn an address book in PHP where a user can login and they can add new contacts , manage contacts, update and delete the contacts.


Here I am using PDO connection and MySQL database 


Login screen





Dashboard where user can manage contacts

 


follow some steps to complete your address book project in PHP:


Step 1

We need database and tables

-- phpMyAdmin SQL Dump
-- version 5.0.4
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Apr 11, 2021 at 08:49 AM
-- Server version: 10.4.17-MariaDB
-- PHP Version: 7.4.14

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
START TRANSACTION;
SET time_zone = "+00:00";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- Database: `address_book`
--

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

--
-- Table structure for table `accounts`
--

CREATE TABLE `accounts` (
  `id` int(11) NOT NULL,
  `username` varchar(50) NOT NULL,
  `password` varchar(255) NOT NULL,
  `email` varchar(100) NOT NULL,
  `non_enc_pass` varchar(300) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Dumping data for table `accounts`
--

INSERT INTO `accounts` (`id`, `username`, `password`, `email`, `non_enc_pass`) VALUES
(7, 'rathorji', '$2y$10$1sNJ9S0reHWeNKOyyuJUL.AQFsSl/CHnd1rfg.k1aouB0xTwLCmuK', 'gajanand.kgn@gmail.com', 'rathorji'),
;

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

--
-- Table structure for table `tbl_contacts`
--

CREATE TABLE `tbl_contacts` (
  `contact_id` int(11) NOT NULL,
  `first_name` varchar(255) NOT NULL,
  `middle_name` varchar(255) NOT NULL,
  `last_name` varchar(255) NOT NULL,
  `address` text DEFAULT NULL,
  `contact_no1` varchar(255) NOT NULL,
  `contact_no2` varchar(255) DEFAULT NULL,
  `email_address` varchar(255) NOT NULL,
  `profile_pic` varchar(255) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

--
-- Dumping data for table `tbl_contacts`
--

INSERT INTO `tbl_contacts` (`contact_id`, `first_name`, `middle_name`, `last_name`, `address`, `contact_no1`, `contact_no2`, `email_address`, `profile_pic`) VALUES
(20, 'Gajanand', '', 'Rathor', '', '8827213789', '', 'gajanand.kgn@gmail.com', '1618076114_Screenshot_2.png');

--
-- Indexes for dumped tables
--

--
-- Indexes for table `accounts`
--
ALTER TABLE `accounts`
  ADD PRIMARY KEY (`id`);

--
-- Indexes for table `tbl_contacts`
--
ALTER TABLE `tbl_contacts`
  ADD PRIMARY KEY (`contact_id`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `accounts`
--
ALTER TABLE `accounts`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=23;

--
-- AUTO_INCREMENT for table `tbl_contacts`
--
ALTER TABLE `tbl_contacts`
  MODIFY `contact_id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=42;
COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;



Step 2

Look at the file or project structure so you can create your files like this 

address-book/
┣ assets/
┃ ┗ img/
┃ ┗ body-bg.jpg
┣ dashboard/
┃ ┣ profile_pics/
┃ ┃ ┣ no_avatar.png
┃ ┃ ┗ ozil.jpg
┃ ┣ config.php
┃ ┣ contacts.php
┃ ┣ footer.php
┃ ┣ header.php
┃ ┣ index.php
┃ ┣ process_form.php
┃ ┣ style.css
┃ ┗ view_contacts.php
┣ home.php
┣ index.php
┣ logout.php
┣ process_login.php
┗ style.css


Step 3

Create files & folders one by one


index.php

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Untitled</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/ionicons/2.0.1/css/ionicons.min.css">
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div class="login-dark">
        <form method="post" action="process_login.php">
            <h2 class="sr-only">Login Form</h2>
            <div class="illustration"><i class="icon ion-ios-locked-outline"></i></div>
            <div class="form-group"><input class="form-control" type="text" name="username" placeholder="Username"></div>
            <div class="form-group"><input class="form-control" type="password" name="password" placeholder="Password"></div>
            <div class="form-group"><button class="btn btn-primary btn-block" type="submit">Log In</button></div><a href="#" class="forgot">Forgot your email or password?</a></form>
    </div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/js/bootstrap.bundle.min.js"></script>
</body>

</html>



proccess_login.php

<?php

include './dashboard/config.php';

// Now we check if the data from the login form was submitted, isset() will check if the data exists.
if (!isset($_POST['username'], $_POST['password'])) {
    // Could not get the data that should have been sent.
    exit('Please fill both the username and password fields!');
}

// Prepare our SQL, preparing the SQL statement will prevent SQL injection.
if ($stmt = $DB->prepare('SELECT id, password FROM accounts WHERE username = :username')) {
    
  
    
    // Bind parameters (s = string, i = int, b = blob, etc), in our case the username is a string so we use "s"

    $stmt->bindParam(":username", $_POST['username']);
    $stmt->execute();
    // Store the result so we can check if the account exists in the database.
    
    
   
    if ($stmt->rowCount() > 0) {
      $results =   $stmt->fetchAll();
    
   
        // Account exists, now we verify the password.
        // Note: remember to use password_hash in your registration file to store the hashed passwords.
        if (password_verify($_POST['password'],$results[0]['password']) == TRUE) {
            // Verification success! User has logged-in!
            // Create sessions, so we know the user is logged in, they basically act like cookies but remember the data on the server.
            session_regenerate_id();
            $_SESSION['loggedin'] = TRUE;
            $_SESSION['name'] = $_POST['username'];
            $_SESSION['id'] = $id;
            header('Location: dashboard');
        } else {
            // Incorrect password
          echo 'Incorrect username and/or password!';
        }
    } else {
        // Incorrect username
       echo 'Incorrect username and/or password!';
    }


    $DB = null;
}


logout.php

<?php
session_start();
session_destroy();
// Redirect to the login page:
header('Location: index.php');
?>


style.css

body{
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background:#475d62 url(assets/img/body-bg.jpg);
}

.login-dark {

}

.login-dark form {
    max-width:320px;
    width:90%;
    background-color:#1e2833;
    padding:40px;
    border-radius:4px;
    transform:translate(-50%, -50%);
    position:absolute;
    top:50%;
    left:50%;
    color:#fff;
    box-shadow:3px 3px 4px rgba(0,0,0,0.2);
}

.login-dark .illustration {
    text-align:center;
    padding:15px 0 20px;
    font-size:100px;
    color:#2980ef;
}

.login-dark form .form-control {
    background:none;
    border:none;
    border-bottom:1px solid #434a52;
    border-radius:0;
    box-shadow:none;
    outline:none;
    color:inherit;
}

.login-dark form .btn-primary {
    background:#214a80;
    border:none;
    border-radius:4px;
    padding:11px;
    box-shadow:none;
    margin-top:26px;
    text-shadow:none;
    outline:none;
}

.login-dark form .btn-primary:hover, .login-dark form .btn-primary:active {
    background:#214a80;
    outline:none;
}

.login-dark form .forgot {
    display:block;
    text-align:center;
    font-size:12px;
    color:#6f7a85;
    opacity:0.9;
    text-decoration:none;
}

.login-dark form .forgot:hover, .login-dark form .forgot:active {
    opacity:1;
    text-decoration:none;
}

.login-dark form .btn-primary:active {
    transform:translateY(1px);
}


files inside dashboard directory

profile_pics directory to move your upload files for profile pic


dashboard/config.php

<?php
error_reporting( E_ALL & ~E_DEPRECATED & ~E_NOTICE );
ob_start();
session_start();

define('DB_DRIVER', 'mysql');
define('DB_SERVER', 'localhost');
define('DB_SERVER_USERNAME', 'root');
define('DB_SERVER_PASSWORD', '');
define('DB_DATABASE', 'address_book');


define('PROJECT_NAME', 'Simple Address Book');
$dboptions = array(
              PDO::ATTR_PERSISTENT => FALSE, 
              PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, 
              PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
              PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
            );

try {
  $DB = new PDO(DB_DRIVER.':host='.DB_SERVER.';dbname='.DB_DATABASE, DB_SERVER_USERNAME, DB_SERVER_PASSWORD , $dboptions);  
} catch (Exception $ex) {
  echo $ex->getMessage();
  die;
}

//get error/success messages
if ($_SESSION["errorType"] != "" && $_SESSION["errorMsg"] != "" ) {
    $ERROR_TYPE = $_SESSION["errorType"];
    $ERROR_MSG = $_SESSION["errorMsg"];
    $_SESSION["errorType"] = "";
    $_SESSION["errorMsg"] = "";
}
?>



dashboard/header.php

<?php
// We need to use sessions, so you should always start sessions using the below code.
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: index.php');
    exit;
}
?>


<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta name="title" content="test">

        <title><?php echo PROJECT_NAME; ?></title>

        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
        <link href="style.css" rel="stylesheet">

        <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
    </head>
    <body>
        <div class="navbar navbar-default navbar-static-top">
            <div class="container">
                <div class="row">
                    <!-- Brand and toggle get grouped for better mobile display -->
                    <div class="navbar-header">
                        <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                            <span class="sr-only">Toggle navigation</span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                        </button>
                        <a class="navbar-brand" href="index.php"><span class="glyphicon glyphicon-home"></span> Site Name</a>
                    </div>
                </div>
            </div>
        </div>

        <div class="container">




            <div class="clearfix"></div>


dashboard/footer.php

  
</div>

    <footer>
      <div class="navbar footer text-center">
        <div class="container-fluid">
          <div class="copyright">
            <a href="https://rathorji.in" target="_blank">&copy; Rathorji - <?php echo date("Y"); ?></a> All rights reserved
          </div>
        </div>
      </div>
    </footer>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  </body>
</html>


dashboard/index.php

<?php
require_once './config.php';
include './header.php';
/* * *****PAGINATION CODE STARTS**************** */
if (!(isset($_GET['pagenum']))) {
    $pagenum = 1;
} else {
    $pagenum = $_GET['pagenum'];
}
$page_limit = ($_GET["show"] <> "" && is_numeric($_GET["show"]) ) ? $_GET["show"] : 8;


try {
    $keyword = trim($_GET["keyword"]);
    if ($keyword <> "") {
        $sql = "SELECT * FROM tbl_contacts WHERE 1 AND "
                . " (first_name LIKE :keyword) ORDER BY first_name ";
        $stmt = $DB->prepare($sql);

        $stmt->bindValue(":keyword", $keyword . "%");
    } else {
        $sql = "SELECT * FROM tbl_contacts WHERE 1 ORDER BY first_name ";
        $stmt = $DB->prepare($sql);
    }

    $stmt->execute();
    $total_count = count($stmt->fetchAll());

    $last = ceil($total_count / $page_limit);

    if ($pagenum < 1) {
        $pagenum = 1;
    } elseif ($pagenum > $last) {
        $pagenum = $last;
    }

    $lower_limit = ($pagenum - 1) * $page_limit;
    $lower_limit = ($lower_limit < 0) ? 0 : $lower_limit;


    $sql2 = $sql . " limit " . ($lower_limit) . " ,  " . ($page_limit) . " ";

    $stmt = $DB->prepare($sql2);

    if ($keyword <> "") {
        $stmt->bindValue(":keyword", $keyword . "%");
    }

    $stmt->execute();
    $results = $stmt->fetchAll();
} catch (Exception $ex) {
    echo $ex->getMessage();
}
/* * *****PAGINATION CODE ENDS**************** */
?>
<div class="row">
    
    <div class="page-header">
        <h1>My contact</h1>
    </div>
    
    <?php if ($ERROR_MSG <> "") { ?>
        <div class="alert alert-dismissable alert-<?php echo $ERROR_TYPE ?>">
            <button data-dismiss="alert" class="close" type="button">×</button>
            <p><?php echo $ERROR_MSG; ?></p>
        </div>
    <?php } ?>

    

    
   

            <div class="col-lg-12" style="padding-left: 0; padding-right: 0;margin-bottom: 30px;" >
                <form action="index.php" method="get" >
                    <div class="col-lg-6 pull-left"style="padding-left: 0;"  >
                        <span class="pull-left">  
                            <label class="col-lg-12 control-label" for="keyword" style="padding-right: 0;">
                                <input type="text" value="<?php echo $_GET["keyword"]; ?>" placeholder="search by first name" id="" class="form-control" name="keyword" style="height: 41px;">
                            </label>
                        </span>
                        <button class="btn btn-info" style="padding: 10px;border-radius: 0;">search</button>
                    </div>
                </form>
                <div class="pull-right" >
                    <a href="contacts.php" class="btn btn-info">
                           Add New Contact
                        
                    </a>
                </div>
            </div>

            <div class="clearfix"></div>
            <?php if (count($results) > 0) { ?>
                <div class="table-responsive">
                    <table class="table table-striped table-hover table-bordered ">
                        <tbody><tr>
                                <th>Avatar</th>
                                <th>First Name</th>
                                <th>Last Name</th>
                                <th>Contact No #1 </th>
                                <th>Email </th>
                                <th>Action </th>

                            </tr>
                            <?php foreach ($results as $res) { ?>
                                <tr>
                                    <td style="text-align: center;">
                                        <?php $pic = ($res["profile_pic"] <> "" ) ? $res["profile_pic"] : "no_avatar.png" ?>
                                        <a href="view_contacts.php?cid=<?php echo $res["contact_id"]; ?>">
                                            <img src="profile_pics/<?php echo $pic ?>" alt="" width="50" height="50" >
                                        </a>
                                    </td>
                                    <td><?php echo $res["first_name"]; ?></td>
                                    <td><?php echo $res["last_name"]; ?></td>
                                    <td><?php echo $res["contact_no1"]; ?></td>
                                    <td><?php echo $res["email_address"]; ?></td>
                                    <td>
                                       
                                        <a href="contacts.php?m=update&cid=<?php echo $res["contact_id"]; ?>&pagenum=<?php echo $_GET["pagenum"]; ?>">
                                           <span class="glyphicon glyphicon-edit"></span> Edit</a>&nbsp;
                                        <a href="process_form.php?mode=delete&cid=<?php echo $res["contact_id"]; ?>&keyword=<?php echo $_GET["keyword"]; ?>&pagenum=<?php echo $_GET["pagenum"]; ?>" onclick="return confirm('Are you sure?')">
                                           <span class="glyphicon glyphicon-remove-circle"></span> Delete</a>&nbsp;
                                    </td>
                                </tr>
                            <?php } ?>
                        </tbody></table>
                </div>
                <div class="col-lg-12 center">
                    <ul class="pagination pagination-sm">
                        <?php
                        //Show page links
                        for ($i = 1; $i <= $last; $i++) {
                            if ($i == $pagenum) {
                                ?>
                                <li class="active"><a href="javascript:void(0);" ><?php echo $i ?></a></li>
                                <?php
                            } else {
                                ?>
                                <li><a href="index.php?pagenum=<?php echo $i; ?>&keyword=<?php echo $_GET["keyword"]; ?>" class="links"  onclick="displayRecords('<?php echo $page_limit; ?>', '<?php echo $i; ?>');" ><?php echo $i ?></a></li>
                                <?php
                            }
                        }
                        ?>
                    </ul>
                </div>

            <?php } else { ?>
                <div class="well well-lg">No contacts found.</div>
            <?php } ?>
        </div>

<?php
include './footer.php';
?>


dashboard/proccess_form.php

<?php

require './config.php';
$mode = $_REQUEST["mode"];
if ($mode == "add_new" ) {
  $first_name = trim($_POST['first_name']);
  $middle_name = trim($_POST['middle_name']);
  $last_name = trim($_POST['last_name']);
  $email_id = trim($_POST['email_id']);
  $contact_no1 = trim($_POST['contact_no1']);
  $contact_no2 = trim($_POST['contact_no2']);
  $address = trim($_POST['address']);
  $filename = "";
  $error = FALSE;

  if (is_uploaded_file($_FILES["profile_pic"]["tmp_name"])) {
    $filename = time() . '_' . $_FILES["profile_pic"]["name"];
    $filepath = 'profile_pics/' . $filename;
    if (!move_uploaded_file($_FILES["profile_pic"]["tmp_name"], $filepath)) {
      $error = TRUE;
    }
  }

  if (!$error) {
    $sql = "INSERT INTO `tbl_contacts` (`first_name`, `middle_name`, `last_name`, `address`, `contact_no1`, `contact_no2`, `email_address`, `profile_pic`) VALUES "
            . "( :fname, :mname, :lname, :address, :contact1, :contact2, :email, :pic)";

    try {
      $stmt = $DB->prepare($sql);

      // bind the values
      $stmt->bindValue(":fname", $first_name);
      $stmt->bindValue(":mname", $middle_name);
      $stmt->bindValue(":lname", $last_name);
      $stmt->bindValue(":address", $address);
      $stmt->bindValue(":contact1", $contact_no1);
      $stmt->bindValue(":contact2", $contact_no2);
      $stmt->bindValue(":email", $email_id);
      $stmt->bindValue(":pic", $filename);

      // execute Query
      $stmt->execute();
      $result = $stmt->rowCount();
      if ($result > 0) {
        $_SESSION["errorType"] = "success";
        $_SESSION["errorMsg"] = "Contact added successfully.";
      } else {
        $_SESSION["errorType"] = "danger";
        $_SESSION["errorMsg"] = "Failed to add contact.";
      }
    } catch (Exception $ex) {

      $_SESSION["errorType"] = "danger";
      $_SESSION["errorMsg"] = $ex->getMessage();
    }
  } else {
    $_SESSION["errorType"] = "danger";
    $_SESSION["errorMsg"] = "failed to upload image.";
  }
  header("location:index.php");
} elseif ( $mode == "update_old" ) {
  
  $first_name = trim($_POST['first_name']);
  $middle_name = trim($_POST['middle_name']);
  $last_name = trim($_POST['last_name']);
  $email_id = trim($_POST['email_id']);
  $contact_no1 = trim($_POST['contact_no1']);
  $contact_no2 = trim($_POST['contact_no2']);
  $address = trim($_POST['address']);
  $cid = trim($_POST['cid']);
  $filename = "";
  $error = FALSE;

  if (is_uploaded_file($_FILES["profile_pic"]["tmp_name"])) {
    $filename = time() . '_' . $_FILES["profile_pic"]["name"];
    $filepath = 'profile_pics/' . $filename;
    if (!move_uploaded_file($_FILES["profile_pic"]["tmp_name"], $filepath)) {
      $error = TRUE;
    }
  } else {
     $filename = $_POST['old_pic'];
  }

  if (!$error) {
    $sql = "UPDATE `tbl_contacts` SET `first_name` = :fname, `middle_name` = :mname, `last_name` = :lname, `address` = :address, `contact_no1` = :contact1, `contact_no2` = :contact2, `email_address` = :email, `profile_pic` = :pic  "
            . "WHERE contact_id = :cid ";

    try {
      $stmt = $DB->prepare($sql);

      // bind the values
      $stmt->bindValue(":fname", $first_name);
      $stmt->bindValue(":mname", $middle_name);
      $stmt->bindValue(":lname", $last_name);
      $stmt->bindValue(":address", $address);
      $stmt->bindValue(":contact1", $contact_no1);
      $stmt->bindValue(":contact2", $contact_no2);
      $stmt->bindValue(":email", $email_id);
      $stmt->bindValue(":pic", $filename);
      $stmt->bindValue(":cid", $cid);

      // execute Query
      $stmt->execute();
      $result = $stmt->rowCount();
      if ($result > 0) {
        $_SESSION["errorType"] = "success";
        $_SESSION["errorMsg"] = "Contact updated successfully.";
      } else {
        $_SESSION["errorType"] = "info";
        $_SESSION["errorMsg"] = "No changes made to contact.";
      }
    } catch (Exception $ex) {

      $_SESSION["errorType"] = "danger";
      $_SESSION["errorMsg"] = $ex->getMessage();
    }
  } else {
    $_SESSION["errorType"] = "danger";
    $_SESSION["errorMsg"] = "Failed to upload image.";
  }
  header("location:index.php?pagenum=".$_POST['pagenum']);
} elseif ( $mode == "delete" ) {
   $cid = intval($_GET['cid']);
   
   $sql = "DELETE FROM `tbl_contacts` WHERE contact_id = :cid";
   try {
     
      $stmt = $DB->prepare($sql);
      $stmt->bindValue(":cid", $cid);
        
       $stmt->execute();  
       $res = $stmt->rowCount();
       if ($res > 0) {
        $_SESSION["errorType"] = "success";
        $_SESSION["errorMsg"] = "Contact deleted successfully.";
      } else {
        $_SESSION["errorType"] = "info";
        $_SESSION["errorMsg"] = "Failed to delete contact.";
      }
     
   } catch (Exception $ex) {
      $_SESSION["errorType"] = "danger";
      $_SESSION["errorMsg"] = $ex->getMessage();
   }
   
   header("location:index.php?pagenum=".$_GET['pagenum']);
}
?>


dashboard/contacts.php

<?php
require_once './config.php';
include './header.php';
try {
    $sql = "SELECT * FROM tbl_contacts WHERE 1 AND contact_id = :cid";
    $stmt = $DB->prepare($sql);
    $stmt->bindValue(":cid", intval($_GET["cid"]));

    $stmt->execute();
    $results = $stmt->fetchAll();
} catch (Exception $ex) {
    echo $ex->getMessage();
}
?>



<div class="row">

    <div class="page-header">
        <h1>Add New contact</h1>
    </div>

    <form class="form-horizontal" name="contact_form" id="contact_form" enctype="multipart/form-data" method="post" action="process_form.php">
        <input type="hidden" name="mode" value="<?php echo ($_GET["m"] == "update") ? "update_old" : "add_new"; ?>" >
        <input type="hidden" name="old_pic" value="<?php echo $results[0]["profile_pic"] ?>" >
        <input type="hidden" name="cid" value="<?php echo intval($results[0]["contact_id"]); ?>" >
        <input type="hidden" name="pagenum" value="<?php echo $_GET["pagenum"]; ?>" >
        <fieldset>
            <div class="form-group">
                <label class="col-lg-4 control-label" for="first_name"><span class="required">*</span>First Name:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["first_name"] ?>" placeholder="First Name" id="first_name" class="form-control" name="first_name"><span id="first_name_err" class="error"></span>
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="middle_name">Middle Name:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["middle_name"] ?>" placeholder="Middle Name" id="middle_name" class="form-control" name="middle_name">
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="last_name"><span class="required">*</span>Last Name:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["last_name"] ?>" placeholder="Last Name" id="last_name" class="form-control" name="last_name"><span id="last_name_err" class="error"></span>
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="email_id"><span class="required">*</span>Email ID:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["email_address"] ?>" placeholder="Email ID" id="email_id" class="form-control" name="email_id"><span id="email_id_err" class="error"></span>
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="contact_no1"><span class="required">*</span>Contact No #1:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["contact_no1"] ?>" placeholder="Contact Number" id="contact_no1" class="form-control" name="contact_no1"><span id="contact_no1_err" class="error"></span>
                    <span class="help-block">Maximum of 10 digits only and only numbers.</span>
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="contact_no2">Contact No #2:</label>
                <div class="col-lg-5">
                    <input type="text" value="<?php echo $results[0]["contact_no2"] ?>" placeholder="Contact Number" id="contact_no2" class="form-control" name="contact_no2"><span id="contact_no2_err" class="error"></span>
                    <span class="help-block">Maximum of 10 digits only and only numbers.</span>
                </div>
            </div>

            <div class="form-group">
                <label class="col-lg-4 control-label" for="profile_pic">Profile picture:</label>
                <div class="col-lg-5">
                    <input type="file"  id="profile_pic" class="form-control file" name="profile_pic"><span id="profile_pic_err" class="error"></span>
                    <span class="help-block">Must me jpg, jpeg, png, gif, bmp image only.</span>
                </div>
            </div>

            <?php if ($_GET["m"] == "update") { ?>
                <div class="form-group">
                    <div class="col-lg-1 col-lg-offset-4">
                        <?php $pic = ($results[0]["profile_pic"] <> "" ) ? $results[0]["profile_pic"] : "no_avatar.png" ?>
                        <a href="profile_pics/<?php echo $pic ?>" target="_blank"><img src="profile_pics/<?php echo $pic ?>" alt="" width="100" height="100" class="thumbnail" ></a>
                    </div>
                </div>
                <?php
            }
            ?>



            <div class="form-group">
                <label class="col-lg-4 control-label" for="address">Address:</label>
                <div class="col-lg-5">
                    <textarea id="address" name="address" rows="3" class="form-control"><?php echo $results[0]["address"] ?></textarea>
                </div>
            </div>

            <div class="form-group">
                <div class="col-lg-5 col-lg-offset-4">
                    <button class="btn btn-primary" type="submit">Submit</button> 
                </div>
            </div>
        </fieldset>
    </form>

</div>


<script type="text/javascript">
    $(document).ready(function () {

        // the fade out effect on hover
        $('.error').hover(function () {
            $(this).fadeOut(200);
        });


        $("#contact_form").submit(function () {
            $('.error').fadeOut(200);
            if (!validateForm()) {
                // go to the top of form first
                $(window).scrollTop($("#contact_form").offset().top);
                return false;
            }
            return true;
        });

    });

    function validateForm() {
        var errCnt = 0;

        var first_name = $.trim($("#first_name").val());
        var last_name = $.trim($("#last_name").val());
        var email_id = $.trim($("#email_id").val());
        var contact_no1 = $.trim($("#contact_no1").val());
        var contact_no2 = $.trim($("#contact_no2").val());

        var profile_pic = $.trim($("#profile_pic").val());

        // validate name
        if (first_name == "") {
            $("#first_name_err").html("Enter your first name.");
            $('#first_name_err').fadeIn("fast");
            errCnt++;
        } else if (first_name.length <= 2) {
            $("#first_name_err").html("Enter atleast 3 letter.");
            $('#first_name_err').fadeIn("fast");
            errCnt++;
        }

        if (last_name == "") {
            $("#last_name_err").html("Enter your last name.");
            $('#last_name_err').fadeIn("fast");
            errCnt++;
        } else if (last_name.length <= 2) {
            $("#last_name_err").html("Enter atleast 3 letter.");
            $('#last_name_err').fadeIn("fast");
            errCnt++;
        }

        if (!isValidEmail(email_id)) {
            $("#email_id_err").html("Enter valid email.");
            $('#email_id_err').fadeIn("fast");
            errCnt++;
        }

        if (contact_no1 == "") {
            $("#contact_no1_err").html("Enter first contact number.");
            $('#contact_no1_err').fadeIn("fast");
            errCnt++;
        } else if (contact_no1.length <= 9 || contact_no1.length > 10) {
            $("#contact_no1_err").html("Enter 10 digits only.");
            $('#contact_no1_err').fadeIn("fast");
            errCnt++;
        } else if (!$.isNumeric(contact_no1)) {
            $("#contact_no1_err").html("Must be digits only.");
            $('#contact_no1_err').fadeIn("fast");
            errCnt++;
        }

        if (contact_no2.length > 0) {
            if (contact_no2.length <= 9 || contact_no2.length > 10) {
                $("#contact_no2_err").html("Enter 10 digits only.");
                $('#contact_no2_err').fadeIn("fast");
                errCnt++;
            } else if (!$.isNumeric(contact_no2)) {
                $("#contact_no2_err").html("Must be digits only.");
                $('#contact_no2_err').fadeIn("fast");
                errCnt++;
            }
        }


        if (profile_pic.length > 0) {
            var exts = ['jpg', 'jpeg', 'png', 'gif', 'bmp'];
            var get_ext = profile_pic.split('.');
            get_ext = get_ext.reverse();


            if ($.inArray(get_ext[0].toLowerCase(), exts) <= -1) {
                $("#profile_pic_err").html("Must me jpg, jpeg, png, gif, bmp image only..");
                $('#profile_pic_err').fadeIn("fast");
            }

        }

        if (errCnt > 0)
            return false;
        else
            return true;
    }

    function isValidEmail(email) {
        var regex = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        return regex.test(email);
    }
</script>
<?php
include './footer.php';
?>


dashboard/view_contacts.php

<?php
require_once './config.php';
include './header.php';
try {
   $sql = "SELECT * FROM tbl_contacts WHERE 1 AND contact_id = :cid";
   $stmt = $DB->prepare($sql);
   $stmt->bindValue(":cid", intval($_GET["cid"]));
   
   $stmt->execute();
   $results = $stmt->fetchAll();
} catch (Exception $ex) {
  echo $ex->getMessage();
}

?>

<div class="row">
  <ul class="breadcrumb">
      <li><a href="index.php">Home</a></li>
      <li class="active">View Contacts</li>
    </ul>
</div>

  <div class="row">
    <div class="panel panel-primary">
      <div class="panel-heading">
        <h3 class="panel-title">View Contact</h3>
      </div>
      <div class="panel-body">
        <form class="form-horizontal" name="contact_form" id="contact_form" enctype="multipart/form-data" method="post" action="process_form.php">
          <fieldset>
            <div class="form-group">
              <label class="col-lg-4 control-label" for="first_name"><span class="required">*</span>First Name:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" placeholder="First Name" value="<?php echo $results[0]["first_name"] ?>" id="first_name" class="form-control" name="first_name"><span id="first_name_err" class="error"></span>
              </div>
            </div>
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="middle_name">Middle Name:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" value="<?php echo $results[0]["middle_name"] ?>" placeholder="Middle Name" id="middle_name" class="form-control" name="middle_name">
              </div>
            </div>
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="last_name"><span class="required">*</span>Last Name:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" value="<?php echo $results[0]["last_name"] ?>" placeholder="Last Name" id="last_name" class="form-control" name="last_name"><span id="last_name_err" class="error"></span>
              </div>
            </div>
            
             <div class="form-group">
              <label class="col-lg-4 control-label" for="profile_pic">Profile picture:</label>
              <div class="col-lg-5">
                <?php $pic = ($results[0]["profile_pic"] <> "" ) ? $results[0]["profile_pic"] : "no_avatar.png" ?>
                <a href="profile_pics/<?php echo $pic ?>" target="_blank"><img src="profile_pics/<?php echo $pic ?>" alt="" width="100" height="100" class="thumbnail" ></a>
              </div>
            </div>
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="email_id"><span class="required">*</span>Email ID:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" value="<?php echo $results[0]["email_address"] ?>" placeholder="Email ID" id="email_id" class="form-control" name="email_id"><span id="email_id_err" class="error"></span>
              </div>
            </div>
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="contact_no1"><span class="required">*</span>Contact No #1:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" value="<?php echo $results[0]["contact_no1"] ?>" placeholder="Contact Number" id="contact_no1" class="form-control" name="contact_no1"><span id="contact_no1_err" class="error"></span>
              </div>
            </div>
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="contact_no2">Contact No #2:</label>
              <div class="col-lg-5">
                <input type="text" readonly="" value="<?php echo $results[0]["contact_no2"] ?>" placeholder="Contact Number" id="contact_no2" class="form-control" name="contact_no2"><span id="contact_no2_err" class="error"></span>
              </div>
            </div>
            
           
            
            
            
            <div class="form-group">
              <label class="col-lg-4 control-label" for="address">Address:</label>
              <div class="col-lg-5">
                <textarea id="address" readonly="" name="address" rows="3" class="form-control"><?php echo $results[0]["address"] ?></textarea>
              </div>
            </div>
          </fieldset>
        </form>

      </div>
    </div>
  </div>
<?php
include './footer.php';
?>


dashboard/style.css

.page-header h1{
    font-size: 32px;
}


Note: if having problem to desire results you can download zip file of source code.


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