MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
mysqli::$insert_id
mysqli_insert_id
Returns the auto generated id used in the latest query
Object oriented style
mixed mysqli->insert_id ;
Procedural style
mixed mysqli_insert_id(mysqli link);
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.
Performing an INSERT or UPDATE statement using the
LAST_INSERT_ID() function will also modify the value returned
by the
mysqli_insert_id
function.
link
Procedural style only: A link identifier returned by
mysqli_connect
or
mysqli_init
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.
If the number is greater than maximal int value,
mysqli_insert_id
will return a string.
Example 3.54 $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.