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/libraries/phputf8/str_split.php

https://bitbucket.org/izubizarreta/https-bitbucket.org-bityvip-alpes
PHP | 35 lines | 12 code | 5 blank | 18 comment | 3 complexity | 10da9ae88b3181718526868a3cf3ffb7 MD5 | raw file
Possible License(s): GPL-2.0, BSD-3-Clause, LGPL-2.1, MIT, LGPL-3.0, LGPL-2.0, JSON
  1. <?php
  2. /**
  3. * @version $Id$
  4. * @package utf8
  5. * @subpackage strings
  6. */
  7. //---------------------------------------------------------------
  8. /**
  9. * UTF-8 aware alternative to str_split
  10. * Convert a string to an array
  11. * Note: requires utf8_strlen to be loaded
  12. * @param string UTF-8 encoded
  13. * @param int number to characters to split string by
  14. * @return string characters in string reverses
  15. * @see http://www.php.net/str_split
  16. * @see utf8_strlen
  17. * @package utf8
  18. * @subpackage strings
  19. */
  20. function utf8_str_split($str, $split_len = 1) {
  21. if ( !preg_match('/^[0-9]+$/',$split_len) || $split_len < 1 ) {
  22. return FALSE;
  23. }
  24. $len = utf8_strlen($str);
  25. if ( $len <= $split_len ) {
  26. return array($str);
  27. }
  28. preg_match_all('/.{'.$split_len.'}|[^\x00]{1,'.$split_len.'}$/us', $str, $ar);
  29. return $ar[0];
  30. }