UUIDUtil.php — Booking for Appointments and Events Calendar – Amelia 1.2.20

ameliabooking / vendor / sabre / vobject / lib / UUIDUtil.php

ameliabooking / vendor / sabre / vobject / lib Last commit date

UUIDUtil.php

67 lines

1	<?php
2
3	namespace Sabre\VObject;
4
5	/**
6	* UUID Utility.
7	*
8	* This class has static methods to generate and validate UUID's.
9	* UUIDs are used a decent amount within various *DAV standards, so it made
10	* sense to include it.
11	*
12	* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
13	* @author Evert Pot (http://evertpot.com/)
14	* @license http://sabre.io/license/ Modified BSD License
15	*/
16	class UUIDUtil
17	{
18	/**
19	* Returns a pseudo-random v4 UUID.
20	*
21	* This function is based on a comment by Andrew Moore on php.net
22	*
23	* @see http://www.php.net/manual/en/function.uniqid.php#94959
24	*
25	* @return string
26	*/
27	public static function getUUID()
28	{
29	return sprintf(
30	'%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
31
32	// 32 bits for "time_low"
33	mt_rand(0, 0xffff), mt_rand(0, 0xffff),
34
35	// 16 bits for "time_mid"
36	mt_rand(0, 0xffff),
37
38	// 16 bits for "time_hi_and_version",
39	// four most significant bits holds version number 4
40	mt_rand(0, 0x0fff) \| 0x4000,
41
42	// 16 bits, 8 bits for "clk_seq_hi_res",
43	// 8 bits for "clk_seq_low",
44	// two most significant bits holds zero and one for variant DCE1.1
45	mt_rand(0, 0x3fff) \| 0x8000,
46
47	// 48 bits for "node"
48	mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
49	);
50	}
51
52	/**
53	* Checks if a string is a valid UUID.
54	*
55	* @param string $uuid
56	*
57	* @return bool
58	*/
59	public static function validateUUID($uuid)
60	{
61	return 0 !== preg_match(
62	'/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i',
63	$uuid
64	);
65	}
66	}
67