Uuid::isValid() - Code Metrics - platine-php/stdlib - Measure and Improve Code Quality continuously with Scrutinizer

Uuid::isValid() A
last analyzed 2025-09-17 13:43 UTC

↳ Parent: Uuid

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	4
c	1
b	0
f	0
dl	0
loc	6
rs	10
cc	1
nc	1
nop	1

<?php

/**
 * Platine Stdlib
 *
 * Platine Stdlib is a the collection of frequently used php features
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2020 Platine Stdlib
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/**
 *  @file Uuid.php
 *
 * The UUID helper class
 *
 * The following class generates VALID RFC 4211 COMPLIANT Universally Unique IDentifiers (UUID)
 * version 3, 4 and 5.
 * Version 3 and 5 UUIDs are named based. They require a name space (another valid UUID) and a value
 * (the name). Given the same name space and name, the output is always the same.
 * Version 4 UUIDs are pseudo-random.
 * UUIDs generated below validates using OSSP UUID Tool, and output for named-based UUIDs
 * are exactly the same. This is a pure PHP implementation.
 *
 * @see "Andrew Moore" contribution note on https://www.php.net/manual/en/function.uniqid.php
 *
 *  @package    Platine\Stdlib\Helper
 *  @author Platine Developers Team
 *  @copyright  Copyright (c) 2020
 *  @license    http://opensource.org/licenses/MIT  MIT License
 *  @link   https://www.platine-php.com
 *  @version 1.0.0
 *  @filesource
 */

declare(strict_types=1);

namespace Platine\Stdlib\Helper;

use InvalidArgumentException;

/**
 * @class Uuid
 * @package Platine\Stdlib\Helper
 */
class Uuid
{
    /**
     * Generate UUID v3
     * @param string $namespace
     * @param string $name
     * @return string
     */
    public static function v3(string $namespace, string $name): string
    {
        return self::v3v5($namespace, $name, 'v3');
    }

    /**
     * Generate UUID v4
     * @return string
     */
    public static function v4(): string
    {
        return sprintf(
            '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
            // 32 bits for "time_low"
            mt_rand(0, 0xffff),
            mt_rand(0, 0xffff),
            // 16 bits for "time_mid"
            mt_rand(0, 0xffff),
            // 16 bits for "time_hi_and_version",
            // four most significant bits holds version number 4
            mt_rand(0, 0x0fff) | 0x4000,
            // 16 bits, 8 bits for "clk_seq_hi_res",
            // 8 bits for "clk_seq_low",
            // two most significant bits holds zero and one for variant DCE1.1
            mt_rand(0, 0x3fff) | 0x8000,
            // 48 bits for "node"
            mt_rand(0, 0xffff),
            mt_rand(0, 0xffff),
            mt_rand(0, 0xffff)
        );
    }

    /**
     * Generate UUID v5
     * @param string $namespace
     * @param string $name
     * @return string
     */
    public static function v5(string $namespace, string $name): string
    {
        return self::v3v5($namespace, $name, 'v5');
    }


    /**
     * Whether the given UUID is valid
     * @param string $uuid
     * @return bool
     */
    public static function isValid(string $uuid): bool
    {
        return preg_match(
            '/^\{?[0-9a-f]{8}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{12}\}?$/i',
            $uuid
        ) === 1;
    }

    /**
     * Generate UUID v3 and v5
     * @param string $namespace
     * @param string $name
     * @param string $type can be v3 or v5
     * @return string
     */
    protected static function v3v5(string $namespace, string $name, string $type = 'v3'): string
    {
        if (self::isValid($namespace) === false) {
            throw new InvalidArgumentException(sprintf('Invalid namespace [%s] provided', $namespace));
        }

        // Get hexadecimal components of namespace
        $nhex = str_replace(['-', '{', '}'], '', $namespace);

        // Binary Value
        $binaryStr = '';

        // Convert Namespace UUID to bits
        for ($i = 0; $i < strlen($nhex); $i += 2) {
            $binaryStr .= chr(hexdec($nhex[$i] . $nhex[$i + 1]));
        }

        // Calculate hash value
        if ($type === 'v3') {
            $hash = md5($binaryStr . $name);
        } else {
            $hash = sha1($binaryStr . $name);
        }

        return sprintf(
            '%08s-%04s-%04x-%04x-%12s',
            // 32 bits for "time_low"
            substr($hash, 0, 8),
            // 16 bits for "time_mid"
            substr($hash, 8, 4),
            // 16 bits for "time_hi_and_version",
            // four most significant bits holds version number 3 and 5
            $type === 'v3' ?
                (hexdec(substr($hash, 12, 4)) & 0x0fff) | 0x3000 : (hexdec(substr($hash, 12, 4)) & 0x0fff) | 0x5000,
            // 16 bits, 8 bits for "clk_seq_hi_res",
            // 8 bits for "clk_seq_low",
            // two most significant bits holds zero and one for variant DCE1.1

            (hexdec(substr($hash, 16, 4)) & 0x3fff) | 0x8000,
            // 48 bits for "node"
            substr($hash, 20, 12)
        );
    }
}


1			<?php
2
3			/**
4			* Platine Stdlib
5			*
6			* Platine Stdlib is a the collection of frequently used php features
7			*
8			* This content is released under the MIT License (MIT)
9			*
10			* Copyright (c) 2020 Platine Stdlib
11			*
12			* Permission is hereby granted, free of charge, to any person obtaining a copy
13			* of this software and associated documentation files (the "Software"), to deal
14			* in the Software without restriction, including without limitation the rights
15			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16			* copies of the Software, and to permit persons to whom the Software is
17			* furnished to do so, subject to the following conditions:
18			*
19			* The above copyright notice and this permission notice shall be included in all
20			* copies or substantial portions of the Software.
21			*
22			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
25			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28			* SOFTWARE.
29			*/
30
31			/**
32			* @file Uuid.php
33			*
34			* The UUID helper class
35			*
36			* The following class generates VALID RFC 4211 COMPLIANT Universally Unique IDentifiers (UUID)
37			* version 3, 4 and 5.
38			* Version 3 and 5 UUIDs are named based. They require a name space (another valid UUID) and a value
39			* (the name). Given the same name space and name, the output is always the same.
40			* Version 4 UUIDs are pseudo-random.
41			* UUIDs generated below validates using OSSP UUID Tool, and output for named-based UUIDs
42			* are exactly the same. This is a pure PHP implementation.
43			*
44			* @see "Andrew Moore" contribution note on https://www.php.net/manual/en/function.uniqid.php
45			*
46			* @package Platine\Stdlib\Helper
47			* @author Platine Developers Team
48			* @copyright Copyright (c) 2020
49			* @license http://opensource.org/licenses/MIT MIT License
50			* @link https://www.platine-php.com
51			* @version 1.0.0
52			* @filesource
53			*/
54
55			declare(strict_types=1);
56
57			namespace Platine\Stdlib\Helper;
58
59			use InvalidArgumentException;
60
61			/**
62			* @class Uuid
63			* @package Platine\Stdlib\Helper
64			*/
65			class Uuid
66			{
67			/**
68			* Generate UUID v3
69			* @param string $namespace
70			* @param string $name
71			* @return string
72			*/
73			public static function v3(string $namespace, string $name): string
74			{
75			return self::v3v5($namespace, $name, 'v3');
76			}
77
78			/**
79			* Generate UUID v4
80			* @return string
81			*/
82			public static function v4(): string
83			{
84			return sprintf(
85			'%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
86			// 32 bits for "time_low"
87			mt_rand(0, 0xffff),
88			mt_rand(0, 0xffff),
89			// 16 bits for "time_mid"
90			mt_rand(0, 0xffff),
91			// 16 bits for "time_hi_and_version",
92			// four most significant bits holds version number 4
93			mt_rand(0, 0x0fff) \| 0x4000,
94			// 16 bits, 8 bits for "clk_seq_hi_res",
95			// 8 bits for "clk_seq_low",
96			// two most significant bits holds zero and one for variant DCE1.1
97			mt_rand(0, 0x3fff) \| 0x8000,
98			// 48 bits for "node"
99			mt_rand(0, 0xffff),
100			mt_rand(0, 0xffff),
101			mt_rand(0, 0xffff)
102			);
103			}
104
105			/**
106			* Generate UUID v5
107			* @param string $namespace
108			* @param string $name
109			* @return string
110			*/
111			public static function v5(string $namespace, string $name): string
112			{
113			return self::v3v5($namespace, $name, 'v5');
114			}
115
116
117			/**
118			* Whether the given UUID is valid
119			* @param string $uuid
120			* @return bool
121			*/
122			public static function isValid(string $uuid): bool
123			{
124			return preg_match(
125			'/^\{?[0-9a-f]{8}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{12}\}?$/i',
126			$uuid
127			) === 1;
128			}
129
130			/**
131			* Generate UUID v3 and v5
132			* @param string $namespace
133			* @param string $name
134			* @param string $type can be v3 or v5
135			* @return string
136			*/
137			protected static function v3v5(string $namespace, string $name, string $type = 'v3'): string
138			{
139			if (self::isValid($namespace) === false) {
140			throw new InvalidArgumentException(sprintf('Invalid namespace [%s] provided', $namespace));
141			}
142
143			// Get hexadecimal components of namespace
144			$nhex = str_replace(['-', '{', '}'], '', $namespace);
145
146			// Binary Value
147			$binaryStr = '';
148
149			// Convert Namespace UUID to bits
150			for ($i = 0; $i < strlen($nhex); $i += 2) {
151			$binaryStr .= chr(hexdec($nhex[$i] . $nhex[$i + 1]));
152			}
153
154			// Calculate hash value
155			if ($type === 'v3') {
156			$hash = md5($binaryStr . $name);
157			} else {
158			$hash = sha1($binaryStr . $name);
159			}
160
161			return sprintf(
162			'%08s-%04s-%04x-%04x-%12s',
163			// 32 bits for "time_low"
164			substr($hash, 0, 8),
165			// 16 bits for "time_mid"
166			substr($hash, 8, 4),
167			// 16 bits for "time_hi_and_version",
168			// four most significant bits holds version number 3 and 5
169			$type === 'v3' ?
170			(hexdec(substr($hash, 12, 4)) & 0x0fff) \| 0x3000 : (hexdec(substr($hash, 12, 4)) & 0x0fff) \| 0x5000,
171			// 16 bits, 8 bits for "clk_seq_hi_res",
172			// 8 bits for "clk_seq_low",
173			// two most significant bits holds zero and one for variant DCE1.1
174
175			(hexdec(substr($hash, 16, 4)) & 0x3fff) \| 0x8000,
176			// 48 bits for "node"
177			substr($hash, 20, 12)
178			);
179			}
180			}
181

platine-php / stdlib

Uuid::isValid() A last analyzed 2025-09-17 13:43 UTC

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Uuid::isValid() A
last analyzed 2025-09-17 13:43 UTC