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Alex Rivera
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I have little confusion about the Php PDO function: lastInsertID. If I understand correctly, it returns the last auto-incremental id that was inserted in the database. I usually use this function when I execute a query that inserts a user in my database when I am creating the functionality of registering a user. My question is that say I have a hundred people registering on my site at one point for example. And may be one user hit the 'Register' button a millisecond after another user. Then is there a chance that this function lastInsertId will return the id of another user that register just momentarily earlier? May be what I am trying to ask is does the server handle one request at a time and go through a php file one at a time? Please let me know about this. Thank you.
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