//Edit: Sorry habe mich vertan, ist ja PHP.

Aus der PHP-Doku:

Usage: int mysql_insert_id ( [resource link_identifier ] )

Purpose: Get the ID generated from the previous INSERT operation
Availability: PHP 3, PHP 4

mysql_insert_id()
returns the ID generated for an AUTO_INCREMENT column by the previous INSERT query using the given link_identifier\n\n

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