functions/encode/iso_8859_7.php

   1 <?php
   2 /**
   3  * iso-8859-7 encoding functions
   4  *
   5  * takes a string of unicode entities and converts it to a iso-8859-7 encoded string
   6  * Unsupported characters are replaced with ?.
   7  *
   8  * @version $Id$
   9  * @copyright Copyright &copy; 2004-2005 The SquirrelMail Project Team
  10  * @package squirrelmail
  11  * @subpackage encode
  12  */
  13
  14 /**
  15  * Converts string to iso-8859-7
  16  * @param string $string text with numeric unicode entities
  17  * @return string iso-8859-7 encoded text
  18  */
  19 function charset_encode_iso_8859_7 ($string) {
  20    // don't run encoding function, if there is no encoded characters
  21    if (! preg_match("'&#[0-9]+;'",$string) ) return $string;
  22
  23     $string=preg_replace("/&#([0-9]+);/e","unicodetoiso88597('\\1')",$string);
  24     // $string=preg_replace("/&#[xX]([0-9A-F]+);/e","unicodetoiso88597(hexdec('\\1'))",$string);
  25
  26     return $string;
  27 }
  28
  29 /**
  30  * Return iso-8859-7 symbol when unicode character number is provided
  31  *
  32  * This function is used internally by charset_encode_iso_8859_7
  33  * function. It might be unavailable to other squirrelmail functions.
  34  * Don't use it or make sure, that functions/encode/iso_8859_7.php is
  35  * included.
  36  *
  37  * @param int $var decimal unicode value
  38  * @return string iso-8859-7 character
  39  */
  40 function unicodetoiso88597($var) {
  41
  42     $iso88597chars=array('160' => "\xA0",
  43                          '163' => "\xA3",
  44                          '166' => "\xA6",
  45                          '167' => "\xA7",
  46                          '168' => "\xA8",
  47                          '169' => "\xA9",
  48                          '171' => "\xAB",
  49                          '172' => "\xAC",
  50                          '173' => "\xAD",
  51                          '176' => "\xB0",
  52                          '177' => "\xB1",
  53                          '178' => "\xB2",
  54                          '179' => "\xB3",
  55                          '183' => "\xB7",
  56                          '187' => "\xBB",
  57                          '189' => "\xBD",
  58                          '900' => "\xB4",
  59                          '901' => "\xB5",
  60                          '902' => "\xB6",
  61                          '904' => "\xB8",
  62                          '905' => "\xB9",
  63                          '906' => "\xBA",
  64                          '908' => "\xBC",
  65                          '910' => "\xBE",
  66                          '911' => "\xBF",
  67                          '912' => "\xC0",
  68                          '913' => "\xC1",
  69                          '914' => "\xC2",
  70                          '915' => "\xC3",
  71                          '916' => "\xC4",
  72                          '917' => "\xC5",
  73                          '918' => "\xC6",
  74                          '919' => "\xC7",
  75                          '920' => "\xC8",
  76                          '921' => "\xC9",
  77                          '922' => "\xCA",
  78                          '923' => "\xCB",
  79                          '924' => "\xCC",
  80                          '925' => "\xCD",
  81                          '926' => "\xCE",
  82                          '927' => "\xCF",
  83                          '928' => "\xD0",
  84                          '929' => "\xD1",
  85                          '931' => "\xD3",
  86                          '932' => "\xD4",
  87                          '933' => "\xD5",
  88                          '934' => "\xD6",
  89                          '935' => "\xD7",
  90                          '936' => "\xD8",
  91                          '937' => "\xD9",
  92                          '938' => "\xDA",
  93                          '939' => "\xDB",
  94                          '940' => "\xDC",
  95                          '941' => "\xDD",
  96                          '942' => "\xDE",
  97                          '943' => "\xDF",
  98                          '944' => "\xE0",
  99                          '945' => "\xE1",
 100                          '946' => "\xE2",
 101                          '947' => "\xE3",
 102                          '948' => "\xE4",
 103                          '949' => "\xE5",
 104                          '950' => "\xE6",
 105                          '951' => "\xE7",
 106                          '952' => "\xE8",
 107                          '953' => "\xE9",
 108                          '954' => "\xEA",
 109                          '955' => "\xEB",
 110                          '956' => "\xEC",
 111                          '957' => "\xED",
 112                          '958' => "\xEE",
 113                          '959' => "\xEF",
 114                          '960' => "\xF0",
 115                          '961' => "\xF1",
 116                          '962' => "\xF2",
 117                          '963' => "\xF3",
 118                          '964' => "\xF4",
 119                          '965' => "\xF5",
 120                          '966' => "\xF6",
 121                          '967' => "\xF7",
 122                          '968' => "\xF8",
 123                          '969' => "\xF9",
 124                          '970' => "\xFA",
 125                          '971' => "\xFB",
 126                          '972' => "\xFC",
 127                          '973' => "\xFD",
 128                          '974' => "\xFE",
 129                          '8213' => "\xAF",
 130                          '8216' => "\xA1",
 131                          '8217' => "\xA2");
 132
 133
 134     if (array_key_exists($var,$iso88597chars)) {
 135         $ret=$iso88597chars[$var];
 136     } else {
 137         $ret='?';
 138     }
 139     return $ret;
 140 }
 141 ?>