4/16/2023 0 Comments Version 4 uuid generator php![]() ![]() As long as you don't have conflicts with those, it might be very sweet. I noticed that for the namespace versions, you'll be generating lots of "long human names" to convert into uuids. It's sort of inefficient, but at least you won't have to write up your own generator functions. Here's one PECL/PEAR thing (I never used it):Ĭonsider using a Linux command-line uuid program, which would have the -v version control flag and related options, and using that to feed your database. PHP has a large number of UUID-generator libraries. You can even do "this is my test data" and "this is my production data" this way. which will be extremely helpful when migrating data between remote locations. It will allow you to leverage the MAC address to be able to identify "which of my servers generated this UUID?". It's actually a fairly good idea to appreciate having the "similar parts". Users that are are able to install packages on their webserver, can install the required package, like: (here for ubuntu) apt-get install php5-dev uuid-dev Use it like this: $uuid = uuid_create(1) If installed on your machine, you can make use of the php-uuid package.Īn example code (which can be used in your application as is) can be found here: You should use V4 UUID instead of V1 if you need your UUID to be unpredictable.Īlso, note that composing for example 4x4 byte random values may not be the same as creating a 16 byte random value.Īs always with crypto and randomness: I would disadvise from implementing your own UUID::V4 routine. In V4 there is no such mechanism, although practically you don't need to worry too much about clashes either :) In fact, V1 UUID is more fit than V4 if you use the UUID just as a table ID - because it uses MAC-address and time stamp to prevent clashes. You will never be able to have as many entries in your database, as the theoretical limit of 16 bytes allows. Your concern, that "most of the UUID is useless and is wasting space" is inherent to the size of the data type.
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