how to get the last inserted id in mysql code example

Example 1: mysql get this inserted id php

$this_id = mysqli_insert_id($db);

Example 2: mysql get last inserted id

-- To get the last inserted auto-increment row ID: --
SELECT LAST_INSERT_ID( optional_expression )

-- If you have just inserted it using a command in C# use: --
int lastId = (Int32)yourCommand.LastInsertedId;