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/system/utf8/ord.php

https://code.google.com/p/php-blackops-rcon/
PHP | 76 lines | 51 code | 16 blank | 9 comment | 12 complexity | 466f41b77f097e44e439768aa262597d MD5 | raw file
  1. <?php defined('SYSPATH') or die('No direct script access.');
  2. /**
  3. * UTF8::ord
  4. *
  5. * @package Kohana
  6. * @author Kohana Team
  7. * @copyright (c) 2007-2008 Kohana Team
  8. * @copyright (c) 2005 Harry Fuecks
  9. * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
  10. */
  11. function _ord($chr)
  12. {
  13. $ord0 = ord($chr);
  14. if ($ord0 >= 0 AND $ord0 <= 127)
  15. return $ord0;
  16. if ( ! isset($chr[1]))
  17. {
  18. trigger_error('Short sequence - at least 2 bytes expected, only 1 seen', E_USER_WARNING);
  19. return FALSE;
  20. }
  21. $ord1 = ord($chr[1]);
  22. if ($ord0 >= 192 AND $ord0 <= 223)
  23. return ($ord0 - 192) * 64 + ($ord1 - 128);
  24. if ( ! isset($chr[2]))
  25. {
  26. trigger_error('Short sequence - at least 3 bytes expected, only 2 seen', E_USER_WARNING);
  27. return FALSE;
  28. }
  29. $ord2 = ord($chr[2]);
  30. if ($ord0 >= 224 AND $ord0 <= 239)
  31. return ($ord0 - 224) * 4096 + ($ord1 - 128) * 64 + ($ord2 - 128);
  32. if ( ! isset($chr[3]))
  33. {
  34. trigger_error('Short sequence - at least 4 bytes expected, only 3 seen', E_USER_WARNING);
  35. return FALSE;
  36. }
  37. $ord3 = ord($chr[3]);
  38. if ($ord0 >= 240 AND $ord0 <= 247)
  39. return ($ord0 - 240) * 262144 + ($ord1 - 128) * 4096 + ($ord2-128) * 64 + ($ord3 - 128);
  40. if ( ! isset($chr[4]))
  41. {
  42. trigger_error('Short sequence - at least 5 bytes expected, only 4 seen', E_USER_WARNING);
  43. return FALSE;
  44. }
  45. $ord4 = ord($chr[4]);
  46. if ($ord0 >= 248 AND $ord0 <= 251)
  47. return ($ord0 - 248) * 16777216 + ($ord1-128) * 262144 + ($ord2 - 128) * 4096 + ($ord3 - 128) * 64 + ($ord4 - 128);
  48. if ( ! isset($chr[5]))
  49. {
  50. trigger_error('Short sequence - at least 6 bytes expected, only 5 seen', E_USER_WARNING);
  51. return FALSE;
  52. }
  53. if ($ord0 >= 252 AND $ord0 <= 253)
  54. return ($ord0 - 252) * 1073741824 + ($ord1 - 128) * 16777216 + ($ord2 - 128) * 262144 + ($ord3 - 128) * 4096 + ($ord4 - 128) * 64 + (ord($chr[5]) - 128);
  55. if ($ord0 >= 254 AND $ord0 <= 255)
  56. {
  57. trigger_error('Invalid UTF-8 with surrogate ordinal '.$ord0, E_USER_WARNING);
  58. return FALSE;
  59. }
  60. }