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/Object/Freezer/IdGenerator/UUID.php

http://github.com/sebastianbergmann/php-object-freezer
PHP | 76 lines | 15 code | 2 blank | 59 comment | 0 complexity | 19863ce3a68ee75456890f70803faf3b MD5 | raw file
  1. <?php
  2. /**
  3. * Object_Freezer
  4. *
  5. * Copyright (c) 2008-2012, Sebastian Bergmann <sb@sebastian-bergmann.de>.
  6. * All rights reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. *
  12. * * Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * * Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in
  17. * the documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * * Neither the name of Sebastian Bergmann nor the names of his
  21. * contributors may be used to endorse or promote products derived
  22. * from this software without specific prior written permission.
  23. *
  24. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  27. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  28. * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  29. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  30. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  31. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  32. * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  34. * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35. * POSSIBILITY OF SUCH DAMAGE.
  36. *
  37. * @package Object_Freezer
  38. * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
  39. * @copyright 2008-2012 Sebastian Bergmann <sb@sebastian-bergmann.de>
  40. * @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
  41. * @since File available since Release 1.0.0
  42. */
  43. require_once 'Object/Freezer/IdGenerator.php';
  44. /**
  45. * Implementation of Object_Freezer_IdGenerator that uses UUIDs as object IDs.
  46. *
  47. * @package Object_Freezer
  48. * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
  49. * @copyright 2008-2012 Sebastian Bergmann <sb@sebastian-bergmann.de>
  50. * @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
  51. * @version Release: @package_version@
  52. * @link http://github.com/sebastianbergmann/php-object-freezer/
  53. * @since Interface available since Release 1.0.0
  54. */
  55. class Object_Freezer_IdGenerator_UUID implements Object_Freezer_IdGenerator
  56. {
  57. /**
  58. * This implementation of UUID generation is based on code from a note
  59. * made on the PHP documentation.
  60. *
  61. * @return string
  62. * @link http://de3.php.net/manual/en/function.uniqid.php#69164
  63. */
  64. public function getId()
  65. {
  66. return sprintf(
  67. '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
  68. mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff),
  69. mt_rand(0, 0x0fff) | 0x4000,
  70. mt_rand(0, 0x3fff) | 0x8000,
  71. mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
  72. );
  73. }
  74. }