phpmyadmin/libraries/string_type_ctype.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  */
  17
  18 /**
  19  * Checks if a character is an alphanumeric one
  20  *
  21  * @uses    ctype_alnum()
  22  * @param   string   character to check for
  23  * @return  boolean  whether the character is an alphanumeric one or not
  24  */
  25 function PMA_STR_isAlnum($c)
  26 {
  27     return ctype_alnum($c);
  28 } // end of the "PMA_STR_isAlnum()" function
  29
  30 /**
  31  * Checks if a character is an alphabetic one
  32  *
  33  * @uses    ctype_alpha()
  34  * @param   string   character to check for
  35  * @return  boolean  whether the character is an alphabetic one or not
  36  */
  37 function PMA_STR_isAlpha($c)
  38 {
  39     return ctype_alpha($c);
  40 } // end of the "PMA_STR_isAlpha()" function
  41
  42 /**
  43  * Checks if a character is a digit
  44  *
  45  * @uses    ctype_digit()
  46  * @param   string   character to check for
  47  * @return  boolean  whether the character is a digit or not
  48  */
  49 function PMA_STR_isDigit($c)
  50 {
  51     return ctype_digit($c);
  52 } // end of the "PMA_STR_isDigit()" function
  53
  54 /**
  55  * Checks if a character is an upper alphabetic one
  56  *
  57  * @uses    ctype_upper()
  58  * @param   string   character to check for
  59  * @return  boolean  whether the character is an upper alphabetic one or not
  60  */
  61 function PMA_STR_isUpper($c)
  62 {
  63     return ctype_upper($c);
  64 } // end of the "PMA_STR_isUpper()" function
  65
  66
  67 /**
  68  * Checks if a character is a lower alphabetic one
  69  *
  70  * @uses    ctype_lower()
  71  * @param   string   character to check for
  72  * @return  boolean  whether the character is a lower alphabetic one or not
  73  */
  74 function PMA_STR_isLower($c)
  75 {
  76     return ctype_lower($c);
  77 } // end of the "PMA_STR_isLower()" function
  78
  79 /**
  80  * Checks if a character is a space one
  81  *
  82  * @uses    ctype_space()
  83  * @param   string   character to check for
  84  * @return  boolean  whether the character is a space one or not
  85  */
  86 function PMA_STR_isSpace($c)
  87 {
  88     return ctype_space($c);
  89 } // end of the "PMA_STR_isSpace()" function
  90
  91 /**
  92  * Checks if a character is an hexadecimal digit
  93  *
  94  * @uses    ctype_xdigit()
  95  * @param   string   character to check for
  96  * @return  boolean  whether the character is an hexadecimal digit or not
  97  */
  98 function PMA_STR_isHexDigit($c)
  99 {
 100     return ctype_xdigit($c);
 101 } // end of the "PMA_STR_isHexDigit()" function
 102
 103 ?>