how to take last insert id in php code example

Example 1: get last inserted id in php

Example (MySQLi Procedural)
$last_id = mysqli_insert_id($conn);

Example 2: last_insert_id() php

<?php
// use mysql_insert_id():
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) { die('Impossible de se connecter : ' . mysql_error()); }
mysql_select_db('mydb');
mysql_query("INSERT INTO mytable (product) values ('something')");
printf("last inserted id is %d\n", mysql_insert_id());
?>