PHP mysqli insert_id() Function

Example - Object Oriented style

Assume that the "Persons" table has an auto-generated id field. Return the id from the last query:

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

$mysqli -> query("INSERT INTO Persons (FirstName, LastName, Age) VALUES ('Glenn', 'Quagmire', 33)");

// Print auto-generated id
echo "New record has id: " . $mysqli -> insert_id;

$mysqli -> close();
?>

Look at example of procedural style at the bottom.

Definition and Usage

The mysqli_insert_id() function returns the id (generated with AUTO_INCREMENT) from the last query.

Syntax

Object oriented style:

$mysqli -> insert_id

Procedural style:

mysqli_insert_id(connection)

Parameter Values

Parameter	Description
connection	Required. Specifies the MySQL connection to use

Technical Details

Return Value:	An integer that represents the value of the AUTO_INCREMENT field updated by the last query. Returns zero if there were no update or no AUTO_INCREMENT field
PHP Version:	5+

Example - Procedural style

Assume that the "Persons" table has an auto-generated id field. Return the id from the last query:

<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}

mysqli_query($con, "INSERT INTO Persons (FirstName, LastName, Age) VALUES ('Glenn', 'Quagmire', 33)");

// Print auto-generated id
echo "New record has id: " . mysqli_insert_id($con);

mysqli_close($con);
?>

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