How to Create a PHP Random GUID Generator to Use in Scalable Web Applications - YouTube
Best GUID Generator Online
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Generate a UUID in PHP
Universally unique identifier - Wikipedia
GitHub - charm-php/uuid: A very fast and dependency free library to generate UUIDs (GUIDs) version 1 or 4, or 64 bit unique identifiers according to snowflake, sonyflake or instaflake algorithms.
GitHub - fab2s/SoUuid: Simple Ordered Uuid Generator in PHP