Php/docs/mysqli.insert-id
mysqli::$insert_id
mysqli_insert_id
(PHP 5, PHP 7)
mysqli::$insert_id -- mysqli_insert_id — Returns the auto generated id used in the latest query
Description
Object oriented style
mixed $mysqli->insert_id;
Procedural style
The mysqli_insert_id() function returns the ID generated by a query (usually INSERT) on a table with a column having the AUTO_INCREMENT attribute. If no INSERT or UPDATE statements were sent via this connection, 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 #1 $mysqli->insert_id example
Object oriented style
<?php$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.
