How to get the id of a row i've just inserted php/mysql [duplicate]

Answer 1

That mostly depends on the interface you're using to access MySQL.

If you're using PDO (recommended), you'd use PDO::lastInsertId(): http://us.php.net/manual/en/pdo.lastinsertid.php

If you're using MySQL, you'd use mysql_insert_id() http://php.net/manual/en/function.mysql-insert-id.php

If you're using MySQLi, you'd use mysqli_insert_id(): http://us.php.net/manual/en/mysqli.insert-id.php

Just simply call whichever function is appropriate right after your INSERT completes.

It's important to note that you likely do not want to fetch id out of the database using SELECT because if you have multiple writers, you may get the id that some other thread inserted. At best, you'll operate on the wrong data, and at worst, you could have serious security issues and/or corruption.

Answer 2

select last_insert_id();

Doc

Answer 3

With PHP you can use mysql_insert_id() function.

Answer 4

Maybe this could help:

Get the Unique ID for the Last Inserted Row

If you insert a record into a table that contains an AUTO_INCREMENT column, you can obtain the value stored into that column by calling the mysql_insert_id() function.