Mercurial > hg > rc1

comparison vendor/sabre/vobject/lib/UUIDUtil.php @ 7:430dbd5346f7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
vendor sabre as distributed
author Charlie Root
date Sat, 13 Jan 2018 09:06:10 -0500
parents
children
comparison
equal deleted inserted replaced
6:cec75ba50afc 7:430dbd5346f7
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) 2011-2015 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 * @return string
25 */
26 static public function getUUID() {
27
28 return sprintf(
29
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 $uuid
56 * @return bool
57 */
58 static public function validateUUID($uuid) {
59
60 return preg_match(
61 '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i',
62 $uuid
63 ) == true;
64
65 }
66
67 }