'Twas brillig, and Nathan Rixham at 10/01/09 23:31 did gyre and gimble:
all I need is a completely unique id for each object instance that can
never be repeated at any time, even in a multiserver environment (and
without using any kind of incremented value from a db table or third
party app)
thoughts, ideas, recommendations?
While it's not guaranteed to be unique the general technique used in
these situations is to use a UUID. The chances of a clash are slim
(2x10^38 ish combinations).
You can generate a uuid via mysql "SELECT UUID()" or via the PHP Pecl
extension php-uuid.
The other way of doing it would be to insert a row into a database row
with an auto-increment field and use the value of that auto-incrment
field as your identifier (SELECT LAST_INSERT_ID() in mysql or via the db
layers API).
HTHs
Col
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Colin Guthrie
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http://colin.guthr.ie/
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