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|guid-generator 1.0.0||Freely Distributable||5||PHP 5, Data types, Windows|
This class can generate a globally unique identifier string.
PHP API Key Generator
GUID (or UUID) is an acronym for "Globally Unique Identifier" (or "Universally Unique Identifier"). It is a 128-bit integer number used to identify resources. The term GUID is generally used by developers working with Microsoft technologies, while UUID is used everywhere else.
128-bits is big enough, and the generation algorithm is unique enough that if 1,000,000,000 GUIDs per second were generated for 1 year the probability of a duplicate would be only 50%. Or if every human on Earth generated 600,000,000 GUIDs there would only be a 50% probability of a duplicate. (1)
In its canonical textual representation, the 16 octets of a UUID are represented as 32 hexadecimal (base-16) digits, displayed in five groups separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters (32 hexadecimal characters and 4 hyphens). For example: (2)
require('GuidGenerator.php'); echo GuidGenerator::create();
Based on the code by Alex Axil as commented on at PHP.net (3)
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