recode_string

(PHP 4, PHP 5)

recode_string — Recode a string according to a recode request

Descrizione

string recode_string ( string $request , string $string )

Recode the string string according to the recode request request .

Elenco dei parametri

request: The desired recode request type
string: The string to be recoded

Valori restituiti

Returns the recoded string or FALSE, if unable to perform the recode request.

Esempi

Example #1 Basic recode_string() example


<?php
echo recode_string("us..flat", "The following character has a diacritical mark: &aacute;");
?>

Note

A simple recode request may be "lat1..iso646-de".

Vedere anche:

The GNU Recode documentation of your installation for detailed instructions about recode requests.

recode

recode_file

Last updated: Fri, 18 Jul 2008

add a note User Contributed Notes
recode_string

msimonc at yahoo dot com
09-Oct-2008 03:33


Seems to require that librecode be installed.

Try iconv() instead.

bisqwit at iki dot fi
23-Nov-2005 10:41


Here's how to convert romaji to katakana/hiragana with PHP (transliterating Japanese text).

The function Romaji2Kana($s) will return with keys 'hira' and 'kata' that respectively contain the hiragana and katakana versions of the given string in UTF-8 encoding.



<?php

// eucjp: 2421; unicode: 3041

define('HIRATABLE', 'a A i I u U e E o O KAGAKIGIKUGUKEGEKOGOSAZASIZISUZUSEZESOZO'.

'TADATIDItuTUDUTEDETODONANINUNENOHABAPAHIBIPIHUBUPUHEBEPEHOBOPO'.

'MAMIMUMEMOyaYAyuYUyoYORARIRUREROwaWAWIWEWOn ');

// eucjp: 2521; unicode: 30A1

define('KATATABLE', 'a A i I u U e E o O KAGAKIGIKUGUKEGEKOGOSAZASIZISUZUSEZESOZO'.

'TADATIDItuTUDUTEDETODONANINUNENOHABAPAHIBIPIHUBUPUHEBEPEHOBOPO'.

'MAMIMUMEMOyaYAyuYUyoYORARIRUREROwaWAWIWEWOn VUkake');



function HiraTrans($s)

{

  #print "trans('$s')\n";

  $pos = strpos(HIRATABLE, $s);

  if($pos===false) return 0xA1BC; // ^

  return 0xA4A1 + $pos/2;

}

function KataTrans($s)

{

  $pos = strpos(KATATABLE, $s);

  if($pos===false) return 0xA1BC; // ^

  return 0xA5A1 + $pos/2;

}



function Romaji2Kana($s)

{

  $s = strtoupper(str_replace(

     Array('shi', 'sh', 'fu', 'chi', 'ch', 'tsu', 'dz', 'l', '-',

           'â', 'î', 'û', 'ê', 'ô', 'ā', 'ī', 'ū', 'ē', 'ō'),

     Array('si',  'sy', 'hu', 'ti',  'ty', 'tu',  'j',  'r', '^',

           'a^', 'i^', 'u^', 'e^', 'o^', 'a^', 'i^', 'u^', 'e^', 'o^'),

     $s));

  // FO -> FUxo

  $s = preg_replace('@F([AIOE])@e', '"HU".strtolower("\1")', $s);

  // VO -> VUxo

  $s = preg_replace('@V([AIUEO])@e', '"VU".strtolower("\1")', $s);

  // KYA -> KYya

  $s = preg_replace('@([KSTNHMRGZBPD])Y([AUO])@e',   '"\1Iy".strtolower("\2")', $s);

  // XTU -> tu (make them actually small)

  $s = preg_replace('@X(TU|Y[AUO]|[AIUEO]|KA|KE)@e', 'strtolower("\1")', $s);

  // KKO -> tuKO

  $s = preg_replace('@([KSTHMRYWGZBPDV]{2,})@e',

                      'str_pad("",2*strlen("\1")-2,"tu").substr("\1",0,1)', $s);

  // N -> n (but not NO -> nO)

  // At this point, N' will work correctly

  $s = preg_replace('@N(?![AIUEO])@', 'n', $s);

  // Unrecognized characters off

  $s = eregi_replace('[^^VAIUEOKSTNHMYRWGZBPD]', '', $s);

  

  $pat = '@([AIUEOnaiueo^]|..)@e';

  $rec = 'EUCJP..UTF8';

  

  return

    Array('hira' => recode_string($rec,preg_replace($pat, 'pack("n", HiraTrans("\1"))', $s)),

          'kata' => recode_string($rec,preg_replace($pat, 'pack("n", KataTrans("\1"))', $s)));

}



print_r( Romaji2Kana('konnichiha') );

?>



Note: Due to technical limitations in the manual pages, there are two errors in this code:

- Some characters in the first str_replace may appear wrong in some php.net mirrors. It supposed to contain aiueo with circumflex and aiueo with macron.

- The strings in the defines should be constant, not appendage expressions. (Line length limitation)



-Joel Yliluoma

jazfresh at spam-javelin.hotmail.com
27-Oct-2003 10:55


I came across a bug (and workaround) when using recode_string. When converting from utf-8 to iso-2022-jp, it would always return an empty string (although it would work fine for conversions from html to utf8). Converting with recode on the command line worked fine, which was odd. I noticed that if I specified "-v" on the command line, recode stated that it was using libiconv to do the conversion.



Using "iconv" instead of recode got the right results.

i.e.



Works:

$str = recode_string("html..utf-8", "&#26085;&#26412;&#35486;"); // Unicode for "Japanese"



Doesn't work:

$str = recode_string("utf-8..iso-2022-jp", $mystring);



Works:

$str = iconv("utf-8", "iso-2022-jp", $mystring);



Don't ask me why. Hope this saves someone some frustrating hours debugging.

kumar at chicagomodular dot com
29-Sep-2002 06:54


GNU recode reference manual:



http://www.delorie.com/gnu/docs/recode/recode_toc.html

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recode

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Last updated: Fri, 18 Jul 2008