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PHP Script  |  2008-07-06  |  2KB  |  68 lines
  1. <?php
  2. /**
  3. * @version $Id: trim.php 10381 2008-06-01 03:35:53Z pasamio $
  4. * @package utf8
  5. * @subpackage strings
  6. */
  7.  
  8. //---------------------------------------------------------------
  9. /**
  10. * UTF-8 aware replacement for ltrim()
  11. * Note: you only need to use this if you are supplying the charlist
  12. * optional arg and it contains UTF-8 characters. Otherwise ltrim will
  13. * work normally on a UTF-8 string
  14. * @author Andreas Gohr <andi@splitbrain.org>
  15. * @see http://www.php.net/ltrim
  16. * @see http://dev.splitbrain.org/view/darcs/dokuwiki/inc/utf8.php
  17. * @return string
  18. * @package utf8
  19. * @subpackage strings
  20. */
  21. function utf8_ltrim( $str, $charlist = FALSE ) {
  22.     if($charlist === FALSE) return ltrim($str);
  23.  
  24.     //quote charlist for use in a characterclass
  25.     $charlist = preg_replace('!([\\\\\\-\\]\\[/^])!','\\\${1}',$charlist);
  26.  
  27.     return preg_replace('/^['.$charlist.']+/u','',$str);
  28. }
  29.  
  30. //---------------------------------------------------------------
  31. /**
  32. * UTF-8 aware replacement for rtrim()
  33. * Note: you only need to use this if you are supplying the charlist
  34. * optional arg and it contains UTF-8 characters. Otherwise rtrim will
  35. * work normally on a UTF-8 string
  36. * @author Andreas Gohr <andi@splitbrain.org>
  37. * @see http://www.php.net/rtrim
  38. * @see http://dev.splitbrain.org/view/darcs/dokuwiki/inc/utf8.php
  39. * @return string
  40. * @package utf8
  41. * @subpackage strings
  42. */
  43. function utf8_rtrim( $str, $charlist = FALSE ) {
  44.     if($charlist === FALSE) return rtrim($str);
  45.  
  46.     //quote charlist for use in a characterclass
  47.     $charlist = preg_replace('!([\\\\\\-\\]\\[/^])!','\\\${1}',$charlist);
  48.  
  49.     return preg_replace('/['.$charlist.']+$/u','',$str);
  50. }
  51.  
  52. //---------------------------------------------------------------
  53. /**
  54. * UTF-8 aware replacement for trim()
  55. * Note: you only need to use this if you are supplying the charlist
  56. * optional arg and it contains UTF-8 characters. Otherwise trim will
  57. * work normally on a UTF-8 string
  58. * @author Andreas Gohr <andi@splitbrain.org>
  59. * @see http://www.php.net/trim
  60. * @see http://dev.splitbrain.org/view/darcs/dokuwiki/inc/utf8.php
  61. * @return string
  62. * @package utf8
  63. * @subpackage strings
  64. */
  65. function utf8_trim( $str, $charlist = FALSE ) {
  66.     if($charlist === FALSE) return trim($str);
  67.     return utf8_ltrim(utf8_rtrim($str, $charlist), $charlist);
  68. }