Hi Internals,
I'd like to open up a discussion around the implementation of a new
function within PHP for generating a UUID.
Whilst there are libraries out there already for PHP which can generate a
UUID, all of those libraries have the possibility to generate IDs that
could have a collision.
The specification for UUID versions 1 and 2 allow for collision-free ID
generation by incorporating the unique MAC addresses from network cards -
something which can't be accessed from PHP code at present.
I can see two possible methods to enable this;
-
New function added to PHP which exposes the MAC address (allowing
external implementations for UUIDs, as well as other possible purposes a
MAC address could be used). -
A new PHP function which introduced a uuid() function which will
generate and return version-compliant UUIDs. -
Both of the above.
Thoughts and feedback welcome to kickstart conversations and if there's a
positive consensus, I'd like to put forward an RFC for this to be
introduced in PHP 8.
Best,
Aran
I'd like to open up a discussion around the implementation of a new
function within PHP for generating a UUID.Whilst there are libraries out there already for PHP which can generate a
UUID, all of those libraries have the possibility to generate IDs that
could have a collision.The specification for UUID versions 1 and 2 allow for collision-free ID
generation by incorporating the unique MAC addresses from network cards -
something which can't be accessed from PHP code at present.I can see two possible methods to enable this;
New function added to PHP which exposes the MAC address (allowing
external implementations for UUIDs, as well as other possible purposes a
MAC address could be used).A new PHP function which introduced a uuid() function which will
generate and return version-compliant UUIDs.Both of the above.
Thoughts and feedback welcome to kickstart conversations and if there's a
positive consensus, I'd like to put forward an RFC for this to be
introduced in PHP 8.
See also https://wiki.php.net/rfc/uuid.
--
Christoph M. Becker
Hi Internals,
I'd like to open up a discussion around the implementation of a new
function within PHP for generating a UUID.Whilst there are libraries out there already for PHP which can generate a
UUID, all of those libraries have the possibility to generate IDs that
could have a collision.The specification for UUID versions 1 and 2 allow for collision-free ID
generation by incorporating the unique MAC addresses from network cards -
something which can't be accessed from PHP code at present.I can see two possible methods to enable this;
New function added to PHP which exposes the MAC address (allowing
external implementations for UUIDs, as well as other possible purposes a
MAC address could be used).A new PHP function which introduced a uuid() function which will
generate and return version-compliant UUIDs.Both of the above.
Thoughts and feedback welcome to kickstart conversations and if there's a
positive consensus, I'd like to put forward an RFC for this to be
introduced in PHP 8.
While undocumented, PHP has the method net_get_interfaces() (since PHP 7.3.0). It uses getifaddrs() on Linux and GetAdaptersAddresses() on Windows to create an array of network interface addresses.
See https://github.com/php/php-src/commit/7ca5a7d84ebdc1b97f49cb460f200db093b96d9d
Right now, the address is only added when it is an IPv4 or IPv6 address. It just needs to be modified to look for the correct “family” and set that as the “mac” array value for the interface.
I’m currently working on a patch for this, so this might help with one aspect of your proposal.
Cheers,
Ben
Hi Ben,
Thanks for the feedback, I wasn't aware of net_get_interfaces, but that's
really helpful and agree that post your patch, implementing a
get_network_mac_addr() function (or similar name) would be amazing.
Many thanks
Aran
Hi Internals,
I'd like to open up a discussion around the implementation of a new
function within PHP for generating a UUID.Whilst there are libraries out there already for PHP which can generate a
UUID, all of those libraries have the possibility to generate IDs that
could have a collision.The specification for UUID versions 1 and 2 allow for collision-free ID
generation by incorporating the unique MAC addresses from network cards -
something which can't be accessed from PHP code at present.I can see two possible methods to enable this;
New function added to PHP which exposes the MAC address (allowing
external implementations for UUIDs, as well as other possible purposes
a
MAC address could be used).A new PHP function which introduced a uuid() function which will
generate and return version-compliant UUIDs.Both of the above.
Thoughts and feedback welcome to kickstart conversations and if there's a
positive consensus, I'd like to put forward an RFC for this to be
introduced in PHP 8.While undocumented, PHP has the method
net_get_interfaces()(since PHP
7.3.0). It usesgetifaddrs()on Linux andGetAdaptersAddresses()on
Windows to create an array of network interface addresses.See
https://github.com/php/php-src/commit/7ca5a7d84ebdc1b97f49cb460f200db093b96d9dRight now, the address is only added when it is an IPv4 or IPv6 address.
It just needs to be modified to look for the correct “family” and set that
as the “mac” array value for the interface.I’m currently working on a patch for this, so this might help with one
aspect of your proposal.Cheers,
Ben
Hi Ben,
Thanks for the feedback, I wasn't aware of net_get_interfaces, but that's really helpful and agree that post your patch, implementing a get_network_mac_addr() function (or similar name) would be amazing.
net_get_interfaces() returns an array that looks like this, so patching this wouldn’t introduce a new method but, rather, modify this array to include a key named “mac,” which (I think) it already does on Windows but not on Linux.
[
"lo" => [
"unicast" => [
[
"flags" => 65609,
"family" => 17,
],
[
"flags" => 65609,
"family" => 2,
"address" => "127.0.0.1",
"netmask" => "255.0.0.0",
],
],
"up" => true,
],
"tunl0" => [
"unicast" => [
[
"flags" => 128,
"family" => 17,
],
],
"up" => false,
],
"ip6tnl0" => [
"unicast" => [
[
"flags" => 128,
"family" => 17,
],
],
"up" => false,
],
"eth0" => [
"unicast" => [
[
"flags" => 69699,
"family" => 17,
],
[
"flags" => 69699,
"family" => 2,
"address" => "172.17.0.2",
"netmask" => "255.255.0.0",
"broadcast" => "172.17.255.255",
],
],
"up" => true,
],
]
I’m currently working on a patch for this, so this might help with one
aspect of your proposal.Here's a quick&dirty for AF_PACKET, looks like OSX/BSD might need AF_LINK
though...
https://github.com/php/php-src/compare/master...sgolemon:sgolemon.ngi-mac
I’m currently working on a patch for this, so this might help with one aspect of your proposal.
Here's a quick&dirty for AF_PACKET, looks like OSX/BSD might need AF_LINK though...
https://github.com/php/php-src/compare/master...sgolemon:sgolemon.ngi-mac
Yep. OSX/BSD needs AF_LINK.
I’m currently working on a patch for this, so this might help with one
aspect of your proposal.Here's a quick&dirty for AF_PACKET, looks like OSX/BSD might need
AF_LINK though...https://github.com/php/php-src/compare/master...sgolemon:sgolemon.ngi-mac
Yep. OSX/BSD needs AF_LINK.
Updated for AF_LINK