PHP mysqli: insert_id() Function
mysqli_insert_id() function / mysqli::$insert_id
The mysqli_insert_id() function / mysqli::$insert_id returns the id (generated with AUTO_INCREMENT) used in the last query.
Syntax:
Object oriented style
mixed $mysqli->insert_id;
Procedural style
mixed mysqli_insert_id ( mysqli $link )
Parameter:
| Name | Description | Required/Optional |
|---|---|---|
| link | A link identifier returned by mysqli_connect() or mysqli_init() | Required for procedural style only and Optional for Object oriented style |
Usage: Procedural style
mysqli_insert_id(connection);
Parameter:
| Name | Description | Required / Optional |
|---|---|---|
| connection | Specifies the MySQL connection to use | Required |
Return value:
The value of the AUTO_INCREMENT field that was updated by the previous query. Returns zero if there was no previous query on the connection or if the query did not update an AUTO_INCREMENT value.
Version: PHP 5, PHP 7
Example of object oriented style:
<?php
$mysqli = new mysqli("localhost", "user1", "datasoft123", "hr");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$mysqli->query("CREATE TABLE myCity LIKE City");
$query = "INSERT INTO myCity VALUES (NULL, 'Mumbai', 'WB', 'Mumbai', 713005)";
$mysqli->query($query);
printf ("New Record has id %d.\n", $mysqli->insert_id);
/* drop table */
$mysqli->query("DROP TABLE myCity");
/* close connection */
$mysqli->close();
?>
Example of procedural style:
<?php
$link = mysqli_connect("localhost", "use1r", "datasoft123", "hr");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_query($link, "CREATE TABLE myCity LIKE City");
$query = "INSERT INTO myCity VALUES (NULL, 'Mumbai', 'WB', 'Mumbai', 713005)";
mysqli_query($link, $query);
printf ("New Record has id %d.\n", mysqli_insert_id($link));
/* drop table */
mysqli_query($link, "DROP TABLE myCity");
/* close connection */
mysqli_close($link);
?>
Output
New Record has id 1
Example:
<?php
$con=mysqli_connect("localhost","user1","datasoft123","hr");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"INSERT INTO employees (First_Name,Last_Name,Age)
VALUES ('David','Skolnick',35)");
// Print auto-generated id
echo "New record has id: " . mysqli_insert_id($con);
mysqli_close($con);
?>
Sample Output:
New record has id: 0
See also