How to generate a new GUID?

php guid
mauzilla picture mauzilla · Feb 10, 2014 · Viewed 61.2k times · Source

I'm working on a web service which requires a new GUID() passed as a reference to a method within the service.

I am not familiar with C# or the GUID() object, but require something similar for PHP (so create a new object which from my understanding returns an empty/blank GUID).

Any ideas?

Answer

Michel Ayres picture Michel Ayres · Oct 2, 2014

You can try the following:

function GUID()
{
    if (function_exists('com_create_guid') === true)
    {
        return trim(com_create_guid(), '{}');
    }

    return sprintf('%04X%04X-%04X-%04X-%04X-%04X%04X%04X', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
}

Source - com_create_guid

Related questions

How unique is the php session id

How unique is the php session id? I got the impression from various things that I've read that I should not rely on two users never getting the same sessionid. Isn't it a GUID?

Read More
Generating a unique ID in PHP

I'm trying to generate a unique ID in php in order to store user-uploaded content on a FS without conflicts. I'm using php, and at the moment this little snippet is responsible for generating the UID: $id = tempnam (".", ""); unlink($id); $…

Read More
How do I check if a string contains a specific word?

Consider: $a = 'How are you?'; if ($a contains 'are') echo 'true'; Suppose I have the code above, what is the correct way to write the statement if ($a contains 'are')?

Read More