libraries/string_native.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Specialized String Functions for phpMyAdmin
   5  *
   6  * Copyright 2002 Robin Johnson <robbat2@users.sourceforge.net>
   7  * http://www.orbis-terrarum.net/?l=people.robbat2
   8  *
   9  * Defines a set of function callbacks that have a pure C version available if
  10  * the "ctype" extension is available, but otherwise have PHP versions to use
  11  * (that are slower).
  12  *
  13  * The SQL Parser code relies heavily on these functions.
  14  *
  15  * @version $Id$
  16  * @package phpMyAdmin-String-Native
  17  */
  18
  19 /**
  20  * Returns length of string depending on current charset.
  21  *
  22  * @uses    strlen()
  23  * @param   string   string to count
  24  * @return  int      string length
  25  * @access  public
  26  * @author  nijel
  27  * @todo rename to PM_STR_len()
  28  */
  29 function PMA_strlen($string)
  30 {
  31     return strlen($string);
  32 }
  33
  34 /**
  35  * Returns substring from string, works depending on current charset.
  36  *
  37  * @uses    substr()
  38  * @param   string   string to count
  39  * @param   int      start of substring
  40  * @param   int      length of substring
  41  * @return  int      substring
  42  * @access  public
  43  * @author  nijel
  44  * @todo rename to PM_STR_sub()
  45  */
  46 function PMA_substr($string, $start, $length = 2147483647)
  47 {
  48     return substr($string, $start, $length);
  49 }
  50
  51 /**
  52  * returns postion of $needle in $haystack or false if not found
  53  *
  54  * @uses    strpos()
  55  * @param   string  $needle
  56  * @param   string  $haystack
  57  * @return  integer position of $needle in $haystack or false
  58  */
  59 function PMA_STR_pos($haystack, $needle, $offset = 0)
  60 {
  61     return strpos($haystack, $needle, $offset);
  62 }
  63
  64 /**
  65  * returns right most postion of $needle in $haystack or false if not found
  66  *
  67  * @uses    strrpos()
  68  * @param   string  $needle
  69  * @param   string  $haystack
  70  * @return  integer position of $needle in $haystack or false
  71  */
  72 function PMA_STR_rPos($haystack, $needle, $offset = 0)
  73 {
  74     return strrpos($haystack, $needle, $offset);
  75 }
  76
  77 ?>