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mysql_insert_id

Get the ID generated from the previous INSERT operation (PHP 4, PHP 5, PECL mysql:1.0)
int mysql_insert_id ( [resource link_identifier] )

Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query.

Parameters

link_identifier: The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If by chance no connection is found or established, an E_WARNING level warning is generated.

Return Values

The ID generated for an AUTO_INCREMENT column by the previous INSERT query on success, 0 if the previous query does not generate an AUTO_INCREMENT value, or FALSE if no MySQL connection was established.

Examples

Example 1447. mysql_insert_id() example

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<?php

$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');

if (!$link) {

    die('Could not connect: ' . mysql_error());

}

mysql_select_db('mydb');



mysql_query("INSERT INTO mytable (product) values ('kossu')");

printf("Last inserted record has id %d\n", mysql_insert_id());

?>

Notes

Caution:

mysql_insert_id() converts the return type of the native MySQL C API function mysql_insert_id() to a type of long (named int in PHP). If your AUTO_INCREMENT column has a column type of BIGINT, the value returned by mysql_insert_id() will be incorrect. Instead, use the internal MySQL SQL function LAST_INSERT_ID() in an SQL query.

Note:

Because mysql_insert_id() acts on the last performed query, be sure to call mysql_insert_id() immediately after the query that generates the value.