Dominique Fournier
b0f2346386
git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@3592 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
36 lines
895 B
PHP
36 lines
895 B
PHP
<?php
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/** DomFramework
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@package domframework
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@author Dominique Fournier <dominique@fournier38.fr> */
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/** Generate a UUID v4
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*/
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class uuid
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{
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/** Based on http://php.net/manual/fr/function.uniqid.php#94959
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*/
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public static function uuid4()
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{
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return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
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// 32 bits for "time_low"
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mt_rand(0, 0xffff), mt_rand(0, 0xffff),
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// 16 bits for "time_mid"
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mt_rand(0, 0xffff),
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// 16 bits for "time_hi_and_version",
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// four most significant bits holds version number 4
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mt_rand(0, 0x0fff) | 0x4000,
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// 16 bits, 8 bits for "clk_seq_hi_res",
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// 8 bits for "clk_seq_low",
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// two most significant bits holds zero and one for variant DCE1.1
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mt_rand(0, 0x3fff) | 0x8000,
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// 48 bits for "node"
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mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
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);
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}
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}
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