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  * @package phpMyAdmin-StringType-CType
  16  */
  17
  18 /**
  19  * Checks if a character is an alphanumeric one
  20  *
  21  * @param string   character to check for
  22  * @return  boolean  whether the character is an alphanumeric one or not
  23  */
  24 function PMA_STR_isAlnum($c)
  25 {
  26     return ctype_alnum($c);
  27 } // end of the "PMA_STR_isAlnum()" function
  28
  29 /**
  30  * Checks if a character is an alphabetic one
  31  *
  32  * @param string   character to check for
  33  * @return  boolean  whether the character is an alphabetic one or not
  34  */
  35 function PMA_STR_isAlpha($c)
  36 {
  37     return ctype_alpha($c);
  38 } // end of the "PMA_STR_isAlpha()" function
  39
  40 /**
  41  * Checks if a character is a digit
  42  *
  43  * @param string   character to check for
  44  * @return  boolean  whether the character is a digit or not
  45  */
  46 function PMA_STR_isDigit($c)
  47 {
  48     return ctype_digit($c);
  49 } // end of the "PMA_STR_isDigit()" function
  50
  51 /**
  52  * Checks if a character is an upper alphabetic one
  53  *
  54  * @param string   character to check for
  55  * @return  boolean  whether the character is an upper alphabetic one or not
  56  */
  57 function PMA_STR_isUpper($c)
  58 {
  59     return ctype_upper($c);
  60 } // end of the "PMA_STR_isUpper()" function
  61
  62
  63 /**
  64  * Checks if a character is a lower alphabetic one
  65  *
  66  * @param string   character to check for
  67  * @return  boolean  whether the character is a lower alphabetic one or not
  68  */
  69 function PMA_STR_isLower($c)
  70 {
  71     return ctype_lower($c);
  72 } // end of the "PMA_STR_isLower()" function
  73
  74 /**
  75  * Checks if a character is a space one
  76  *
  77  * @param string   character to check for
  78  * @return  boolean  whether the character is a space one or not
  79  */
  80 function PMA_STR_isSpace($c)
  81 {
  82     return ctype_space($c);
  83 } // end of the "PMA_STR_isSpace()" function
  84
  85 /**
  86  * Checks if a character is an hexadecimal digit
  87  *
  88  * @param string   character to check for
  89  * @return  boolean  whether the character is an hexadecimal digit or not
  90  */
  91 function PMA_STR_isHexDigit($c)
  92 {
  93     return ctype_xdigit($c);
  94 } // end of the "PMA_STR_isHexDigit()" function
  95
  96 ?>