A UUID can have so many combinations that UUIDs are effectively unique. But it's possible to generate the same one twice, however small the chance. Is it best practice to take this chance into account, checking to be sure you haven't used it?

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Strings Uuid Guid Identifiers PHP

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  • UUID

    :snowflake: A PHP library for generating universally unique identifiers (UUIDs). (by ramsey)

    • In theory the risk of collision is so small it can be written off, but implementations can have bugs.

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