mysqli::$insert_id

(PHP 5, PHP 7)

Returns the auto generated id used in the last query

mixed mysqli_insert_id ( mysqli $link )

Object oriented style

mixed $mysqli->insert_id;

Procedural style

The mysqli_insert_id() function returns the ID generated by a query on a table with a column having the AUTO_INCREMENT attribute. If the last query wasn't an INSERT or UPDATE statement or if the modified table does not have a column with the AUTO_INCREMENT attribute, this function will return zero.

Note:

Performing an INSERT or UPDATE statement using the LAST_INSERT_ID() function will also modify the value returned by the mysqli_insert_id() function.

Parameters:

link

Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

Returns:

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.

Note:

If the number is greater than maximal int value, mysqli_insert_id() will return a string.

Examples:

$mysqli->insert_id example

Object oriented style

<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
 
/* 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, 'Stuttgart', 'DEU', 'Stuttgart', 617000)";
$mysqli->query($query);
 
printf ("New Record has id %d.\n", $mysqli->insert_id);
 
/* drop table */
$mysqli->query("DROP TABLE myCity");
 
/* close connection */
$mysqli->close();
?>

Procedural style

<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
 
/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}
 
mysqli_query($link, "CREATE TABLE myCity LIKE City");
 
$query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)";
mysqli_query($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);
?>

The above examples will output:

New Record has id 1.

Links:

http://php.net/manual/en/mysqli.insert-id.php

doc_php

2025-01-10 15:47:30

Comments