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Tutorial: How to Get the Last Inserted ID in MySQL Table using PHP with Source Code
Getting Started on How to Get the Last Inserted ID in MySQL Table using PHP
This is a tutorial on Get the Last Inserted ID in MySQL Table using PHP. In this tutorial, I’m going to show you how to get the last inserted id in our database table. In this tutorial, I have set up an Insert Form to display the identifier that will be added in our MySQL database. I’ve included two mysqli methods in this tutorial in the comments. So, feel free to switch between the two.
Creating our Database on Get the Last Inserted ID in MySQL Table using PHP
First, we’re going to create a database that contains our data.
1. Open phpMyAdmin.
2. Click databases, create a database and name it as “last_id”.
3. After creating a database, click the SQL and paste the below code. See image below for detailed instruction.
CREATE TABLE `user` ( `userid` INT(11) NOT NULL AUTO_INCREMENT, `firstname` VARCHAR(30) NOT NULL, `lastname` VARCHAR(30) NOT NULL, `address` VARCHAR(100) NOT NULL, PRIMARY KEY(`userid`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
Creating a Connection
Next step is to create a database connection and save it as “conn.php”. This file will serve as our bridge between our form and our database. To create the file, open your HTML code editor and paste the code below after the tag.
<?php
//MySQLi Procedural
//$conn = mysqli_connect("localhost","root","","last_id");
//if (!$conn) {
//die("Connection failed: " . mysqli_connect_error());
//}
//MySQLi Object-oriented
$conn = new mysqli("localhost","root","","last_id");
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
?>Creating a Form and Show id Script
Lastly, we create the add form as well as our show id script. To create the form, open your HTML code editor and paste the code below after the tag.
<!DOCTYPE html>
<html>
<head>
<title>Getting the Last Inserted ID in MySQL Table using PHP/MySQli</title>
</head>
<body>
<h2>Add Form:</h2>
<form method="POST">
<label>Firstname:</label><input type="text" name="firstname">
<label>Lastname:</label><input type="text" name="lastname">
<label>Address:</label><input type="text" name="address">
<input type="submit" value="Add" name="submit">
</form>
<?php
$id="";
$row['firstname']="";
$row['lastname']="";
$row['address']="";
if (isset($_POST['submit'])){
$firstname=$_POST['firstname'];
$lastname=$_POST['lastname'];
$address=$_POST['address'];
include('conn.php');
//MySQLi Procedural
//mysqli_query($conn,"insert into `user` (firstname, lastname, address) values ('$firstname','$lastname','$address')");
//$id = mysqli_insert_id($conn);
//$query=mysqli_query($conn,"select * from `user` where userid='$id'");
//$row=mysqli_fetch_assoc($query);
//MySQLi Object-oriented
$conn->query("insert into `user` (firstname, lastname, address) values ('$firstname','$lastname','$address')");
$id = $conn->insert_id;
$query=$conn->query("select * from `user` where userid='$id'");
$row = $query->fetch_assoc();
}
?>
<h2>Last inserted Id: <?php echo $id; ?></h2>
<h2>Data:</h2>
<label>Firstname: </label> <?php echo $row['firstname']; ?><br>
<label>Lastname: </label> <?php echo $row['lastname']; ?><br>
<label>Address: </label> <?php echo $row['address']; ?>
</body>
</html>Happy Coding!
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