mysqli::$insert_id, mysqli_insert_id

• mysqli::$insert_id

  mysqli_insert_id

  Returns the auto generated id used in the last query

Description

Object oriented stylemixed mysqli->insert_id ;

Procedural stylemixed mysqli_insert_id(mysqli link);

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

Return Values

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

Example 20.124. $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:

Retornar