PHP
Get ID of Last Inserted Record
If we
perform an INSERT or UPDATE on a table with an AUTO_INCREMENT field, we can get
the ID of the last inserted/updated record immediately.
In the table
"MyGuests", the "id" column is an AUTO_INCREMENT field:
CREATE
TABLE MyGuests (
id
INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname
VARCHAR(30) NOT NULL,
lastname
VARCHAR(30) NOT NULL,
email
VARCHAR(50),
reg_date
TIMESTAMP
)
The
following examples are equal to the examples from the previous page (PHP Insert
Data Into MySQL), except that we have added one single line of code to retrieve
the ID of the last inserted record. We also echo the last inserted ID:
Example
(MySQLi Object-oriented)
<?php
$servername
= "localhost";
$username
= "username";
$password
= "password";
$dbname
= "myDB";
//
Create connection
$conn
= new mysqli($servername, $username, $password, $dbname);
//
Check connection
if
($conn->connect_error) {
die("Connection failed: " .
$conn->connect_error);
}
$sql
= "INSERT INTO MyGuests (firstname, lastname, email)
VALUES
('John', 'Doe', 'john@example.com')";
if
($conn->query($sql) === TRUE) {
$last_id = $conn->insert_id;
echo "New record created successfully.
Last inserted ID is: " . $last_id;
}
else {
echo "Error: " . $sql .
"<br>" . $conn->error;
}
$conn->close();
?>
Example
(MySQLi Procedural)
<?php
$servername
= "localhost";
$username
= "username";
$password
= "password";
$dbname
= "myDB";
//
Create connection
$conn
= mysqli_connect($servername, $username, $password, $dbname);
//
Check connection
if
(!$conn) {
die("Connection failed: " .
mysqli_connect_error());
}
$sql
= "INSERT INTO MyGuests (firstname, lastname, email)
VALUES
('John', 'Doe', 'john@example.com')";
if
(mysqli_query($conn, $sql)) {
$last_id = mysqli_insert_id($conn);
echo "New record created successfully.
Last inserted ID is: " . $last_id;
}
else {
echo "Error: " . $sql .
"<br>" . mysqli_error($conn);
}
mysqli_close($conn);
?>
Example
(PDO)
<?php
$servername
= "localhost";
$username
= "username";
$password
= "password";
$dbname
= "myDBPDO";
try
{
$conn = new
PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE,
PDO::ERRMODE_EXCEPTION);
$sql = "INSERT INTO MyGuests
(firstname, lastname, email)
VALUES ('John', 'Doe',
'john@example.com')";
// use exec() because no results are
returned
$conn->exec($sql);
$last_id = $conn->lastInsertId();
echo "New record created successfully.
Last inserted ID is: " . $last_id;
}
catch(PDOException
$e)
{
echo $sql . "<br>" .
$e->getMessage();
}
$conn
= null;
?>
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