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  * @todo rename to PM_STR_len()
  27  */
  28 function PMA_strlen($string)
  29 {
  30     return strlen($string);
  31 }
  32
  33 /**
  34  * Returns substring from string, works depending on current charset.
  35  *
  36  * @uses    substr()
  37  * @param   string   string to count
  38  * @param   int      start of substring
  39  * @param   int      length of substring
  40  * @return  int      substring
  41  * @access  public
  42  * @todo rename to PM_STR_sub()
  43  */
  44 function PMA_substr($string, $start, $length = 2147483647)
  45 {
  46     return substr($string, $start, $length);
  47 }
  48
  49 /**
  50  * returns postion of $needle in $haystack or false if not found
  51  *
  52  * @uses    strpos()
  53  * @param   string  $needle
  54  * @param   string  $haystack
  55  * @return  integer position of $needle in $haystack or false
  56  */
  57 function PMA_STR_pos($haystack, $needle, $offset = 0)
  58 {
  59     return strpos($haystack, $needle, $offset);
  60 }
  61
  62 /**
  63  * returns right most postion of $needle in $haystack or false if not found
  64  *
  65  * @uses    strrpos()
  66  * @param   string  $needle
  67  * @param   string  $haystack
  68  * @return  integer position of $needle in $haystack or false
  69  */
  70 function PMA_STR_rPos($haystack, $needle, $offset = 0)
  71 {
  72     return strrpos($haystack, $needle, $offset);
  73 }
  74
  75 ?>