[Summary view] [Print] [Text view]

   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  }