PHP - Get Last Inserted ID Using MySQLI

Submitted by razormist on Sunday, April 28, 2019 - 09:02.

In this tutorial we will create a Get Last Inserted ID using MySQLi. This code can retrieve the last entry that have been store in the database when the user submit a data. The code use mysqli_insert_id() with mysqli connection as a parameter to get the last id and display it by adding the id in the WHERE clause. This a user-friendly program feel free to modify and use it to your system. We will be using PHP as a scripting language that interpret in the webserver such as xamp, wamp, etc. It is widely use by modern website application to handle and protect user confidential information.

Getting Started:

First you have to download & install XAMPP or any local server that run PHP scripts. Here's the link for XAMPP server https://www.apachefriends.org/index.html. And, this is the link for the bootstrap that i used for the layout design https://getbootstrap.com/.

Creating Database

Open your database web server then create a database name in it db_last, after that click Import then locate the database file inside the folder of the application then click ok. tut1

Creating the database connection

Open your any kind of text editor(notepad++, etc..). Then just copy/paste the code below then name it conn.php.

<?php
        $conn=mysqli_connect('localhost', 'root', '', 'db_last');
        
        if(!$conn){
                die("Error: Failed to connect to database!");
        }
?>

Creating The Interface

This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as index.php.

<!DOCTYPE html>
<html lang="en">
        <head>
                <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
                <link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
        </head>
<body>
        <nav class="navbar navbar-default">
                <div class="container-fluid">
                        <a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
                </div>
        </nav>
        <div class="col-md-3"></div>
        <div class="col-md-6 well">
                <h3 class="text-primary">PHP - Get Last Inserted ID Using MySQLI</h3>
                <hr style="border-top:1px dotted #ccc;"/>
                <div class="col-md-6">
                        <form method="POST" action="">
                                <div class="form-group">
                                        <label>Name</label>
                                        <input type="text" name="name" class="form-control" required="required"/>
                                </div>
                                <div class="form-group">
                                        <label>Username</label>
                                        <input type="text" name="username" class="form-control" required="required"/>
                                </div>
                                <div class="form-group">
                                        <label>Password</label>
                                        <input type="password" name="password" maxlength="12" class="form-control" required="required"/>
                                </div>
                                <center><button class="btn btn-primary" name="add" >Add</button></center>
                                <br />
                                
                                <?php include'insert.php'?>
                                
                        </form>
                </div>
                <div class="col-md-6">
                        <table class="table table-bordered">
                                <thead>
                                        <tr>
                                                <th>Name</th>
                                                <th>Username</th>
                                                <th>Password</th>
                                        </tr>
                                </thead>
                                <tbody>
                                        <?php
                                        
                                                $query=mysqli_query($conn, "SELECT * FROM `user`") or die(mysqli_error());
                                                while($fetch=mysqli_fetch_array($query)){
                                        ?>
                                        <tr>
                                                <td><?php echo $fetch['name']?></td>
                                                <td><?php echo $fetch['username']?></td>
                                                <td>****</td>
                                        </tr>
                                        <?php
                                                }
                                        ?>
                                </tbody>
                        </table>
                </div>
        </div>
</body> 
</html>

Creating Main Function

This code contains the main function of the application. This code will display the last inserted data when submitted. To do that just copy and write this block of codes inside the text editor, then save it as insert.php.

<?php
        require_once 'conn.php';
        
        if(ISSET($_POST['add'])){
                $name=$_POST['name'];
                $username=$_POST['username'];
                $password=$_POST['password'];
                
                mysqli_query($conn, "INSERT INTO `user` VALUES('', '$name', '$username', '$password')") or die(mysqli_error());
                
                $id = mysqli_insert_id($conn);
                
                $query = mysqli_query($conn, "SELECT * FROM `user` WHERE `user_id` = '$id'") or die(mysqli_error());
                $fetch = mysqli_fetch_array($query);
                
                echo "<center><label>You have inserted <span class='text-danger'>".$fetch['name']."</span> has a new user.</label></center>";
        }
?>

There you have it we successfully created Get Last Inserted ID using MySQLi. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!