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Completed
Pull Request — master (#545)
by Richard
09:25
created

Uuid::generate()   A

↳ Parent: Uuid

Complexity

Conditions 1
Paths 1

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 5
nc 1
nop 0
dl 0
loc 9
rs 9.6666
c 0
b 0
f 0
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<?php
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/*
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 You may not change or alter any portion of this comment or credits
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 of supporting developers from this source code or any supporting source code
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 which is considered copyrighted (c) material of the original comment or credit authors.
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 This program is distributed in the hope that it will be useful,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 but WITHOUT ANY WARRANTY; without even the implied warranty of

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Xmf;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * Generate UUID

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @category  Xmf\Uuid

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @package   Xmf

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @author    Richard Griffith <[email protected]>

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @copyright 2017 XOOPS Project (http://xoops.org)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @license   GNU GPL 2 or later (http://www.gnu.org/licenses/gpl-2.0.html)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @link      http://xoops.org

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class Uuid

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * generate - generate a version 4 (random) UUID

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * Based on comment by pavel.volyntsev(at)gmail at http://php.net/manual/en/function.com-create-guid.php

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @return string UUID

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @throws \Exception on insufficient entropy

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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     */

            


            
                                                        
            
                                    
            
            

                
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    public static function generate()

            


            
                                                        
            
                                    
            
            

                
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    {

            


            
                                                        
            
                                    
            
            

                
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        $data = random_bytes(16);

            


            
                                                        
            
                                    
            
            

                
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        $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100

            


            
                                                        
            
                                    
            
            

                
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        $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10

            


            
                                                        
            
                                    
            
            

                
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        return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));

            


            
                                                        
            
                                    
            
            

                
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    }

            


            
                                                        
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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