I am facing a similar question to the one discussed here.
From what I gathered from that discussion, it seems that PDO::lastInsertId() is secure when called from different connections. However, does this imply that using PDO::ATTR_PERSISTENT => true in the PDO constructor should be avoided if you intend to utilize PDO::lastInsertId() within that same connection?
In simpler terms, would my application need to undergo "the overhead of establishing a new connection every time a script needs to talk to a database" as described in PDO Connections and Connection Management if I have to use PDO::lastInsertId()?