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Package: utf8

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Source code for file /phputf8/strcspn.php

Documentation is available at strcspn.php

  1. <?php
  2. /**
  3. * @version $Id: strcspn.php,v 1.1 2006/02/25 13:50:17 harryf Exp $
  4. * @package utf8
  5. * @subpackage strings
  6. */
  7.  
  8. //---------------------------------------------------------------
  9. /**
  10. * UTF-8 aware alternative to strcspn
  11. * Find length of initial segment not matching mask
  12. * Note: requires utf8_strlen and utf8_substr (if start, length are used)
  13. * @param string 
  14. * @return int 
  15. * @see http://www.php.net/strcspn
  16. * @see utf8_strlen
  17. * @package utf8
  18. * @subpackage strings
  19. */
  20. function utf8_strcspn($str, $mask, $start = NULL, $length = NULL) {
  21.  
  22.     if ( empty($mask) || strlen($mask) == 0 ) {
  23.         return NULL;
  24.     }
  25.  
  26.     $mask = preg_replace('!([\\\\\\-\\]\\[/^])!','\\\${1}',$mask);
  27.  
  28.     if ( $start !== NULL || $length !== NULL ) {
  29.         $str = utf8_substr($str, $start, $length);
  30.     }
  31.  
  32.     preg_match('/^[^'.$mask.']+/u',$str, $matches);
  33.  
  34.     if ( isset($matches[0]) ) {
  35.         return utf8_strlen($matches[0]);
  36.     }
  37.  
  38.     return 0;
  39.  
  40. }
Documentation generated on Mon, 05 Mar 2007 21:26:58 +0000 by phpDocumentor 1.3.1