mysql_insert_id alternative for postgresql

Question

is there an alternative for mysql_insert_id() php function for PostgreSQL? Most of the frameworks are solving the problem partially by finding the current value

Answer 1

From php.net:

$res=pg_query("SELECT nextval('foo_key_seq') as key");
$row=pg_fetch_array($res, 0);
$key=$row['key'];
// now we have the serial value in $key, let's do the insert
pg_query("INSERT INTO foo (key, foo) VALUES ($key, 'blah blah')");

This should always provide unique key, because key retrieved from database will be never retrieved again.