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  * @package phpMyAdmin-String-Native
  16  */
  17
  18 /**
  19  * Returns length of string depending on current charset.
  20  *
  21  * @uses    strlen()
  22  * @param   string   string to count
  23  * @return  int      string length
  24  * @access  public
  25  * @todo rename to PM_STR_len()
  26  */
  27 function PMA_strlen($string)
  28 {
  29     return strlen($string);
  30 }
  31
  32 /**
  33  * Returns substring from string, works depending on current charset.
  34  *
  35  * @uses    substr()
  36  * @param   string   string to count
  37  * @param   int      start of substring
  38  * @param   int      length of substring
  39  * @return  int      substring
  40  * @access  public
  41  * @todo rename to PM_STR_sub()
  42  */
  43 function PMA_substr($string, $start, $length = 2147483647)
  44 {
  45     return substr($string, $start, $length);
  46 }
  47
  48 /**
  49  * returns postion of $needle in $haystack or false if not found
  50  *
  51  * @uses    strpos()
  52  * @param   string  $needle
  53  * @param   string  $haystack
  54  * @return  integer position of $needle in $haystack or false
  55  */
  56 function PMA_STR_pos($haystack, $needle, $offset = 0)
  57 {
  58     return strpos($haystack, $needle, $offset);
  59 }
  60
  61 /**
  62  * returns right most postion of $needle in $haystack or false if not found
  63  *
  64  * @uses    strrpos()
  65  * @param   string  $needle
  66  * @param   string  $haystack
  67  * @return  integer position of $needle in $haystack or false
  68  */
  69 function PMA_STR_rPos($haystack, $needle, $offset = 0)
  70 {
  71     return strrpos($haystack, $needle, $offset);
  72 }
  73
  74 ?>