>PHP: get_html_translation_table

get_html_translation_table

(PHP 4, PHP 5)

get_html_translation_table -- Devuelve la tabla de traducciÃ³n utilizada por htmlspecialchars() y htmlentities()

DescripciÃ³n

array get_html_translation_table ( [int tabla [, int estilo_de_escape]] )

get_html_translation_table() devolverÃ¡ la tabla de traducciÃ³n que se usa internamente para htmlspecialchars() y htmlentities().

Hay dos nuevas constantes (HTML_ENTITIES, HTML_SPECIALCHARS) que le permiten especificar la tabla deseada. El valor por defecto es HTML_SPECIALCHARS y como sucede en las funciones htmlspecialchars() y htmlentities(), se puede especificar un parÃ¡metro opcional que indica el estilo_de_escape con el que se trabaja. Su valor por defecto es ENT_COMPAT. La descripciÃ³n de los modos disponibles se encuentra en la funciÃ³n htmlspecialchars().

Nota: Los caracteres especiales se pueden codificar de diferentes formas. Por ejemplo, " se puede codificar como ", " o &#x22. La funciÃ³n get_html_translation_table() devuelve solamente la forma mÃ¡s comÃºn de codificaciÃ³n.

Ejemplo 1. Ejemplo de Tabla de TraducciÃ³n

<?php $tabla = get_html_translation_table(HTML_ENTITIES); $cadena = "Hallo & <Frau> & KrÃ¤mer"; $codificada = strtr($cadena, $tabla); ?>
La variable $codificada contendrÃ¡: "Hallo & <Frau> & Krämer".

Vea tambiÃ©n: htmlspecialchars(), htmlentities() y html_entity_decode().

add a note User Contributed Notes
get_html_translation_table

edwardzyang at thewritingpot dot com
23-Jul-2006 07:04


Quite disappointingly, get_html_translation_table() only gives the characters for ISO-8859-1, making it quite useless for UTF-8 or anything else like that (as a previous commenter noticed).

Patrick nospam at nospam mesopia dot com
29-May-2005 07:00


Not sure what's going on here but I've run into a problem that others might face as well...



<?php



$translations = array_flip(get_html_translation_table(HTML_ENTITIES,ENT_QUOTES));



?>



returns the single quote ' as being equal to &#39; while



<?php



$translatedString = htmlentities($string,ENT_QUOTES);



?>

returns it as being equal to &#039;



I've had to do a specific string replacement for the time being... Not sure if it's an issue with the function or the array manipulation.



-Pat

Alex Minkoff
18-May-2005 04:30


If you want to display special HTML entities in a web browser, you can use the following code:



<?

$entities = get_html_translation_table(HTML_ENTITIES);

foreach ($entities as $entity) {

    $new_entities[$entity] = htmlspecialchars($entity);

}

echo "<pre>";

print_r($new_entities);

echo "</pre>";

?>



If you don't, the key name of each element will appear to be the same as the element content itself, making it look mighty stupid. ;)

ryan at ryancannon dot com
26-Jan-2005 02:05


In XML, you can't assume that the doctype will include the same character entity definitions as HTML. XML authors may require character references instead. The following two functions use get_html_translation_table() to encode data in numeric references. The second, optional argument can be used to substitute a different translation table.



function xmlcharacters($string, $trans='') {

    $trans=(is_array($trans))? $trans:get_html_translation_table(HTML_ENTITIES, ENT_QUOTES);

    foreach ($trans as $k=>$v)

        $trans[$k]= "&#".ord($k).";";

    return strtr($string, $trans);

}

function xml_character_decode($string, $trans='') {

    $trans=(is_array($trans))? $trans:get_html_translation_table(HTML_ENTITIES, ENT_QUOTES);

    foreach ($trans as $k=>$v)

        $trans[$k]= "&#".ord($k).";";

    $trans=array_flip($trans);

    return strtr($string, $trans);

}

kevin_bro at hostedstuff dot com
03-Jan-2003 06:06


Alans version didn't seem to work right. If you're having the same problem consider using this slightly modified version instead:



function unhtmlentities ($string)  {

   $trans_tbl = get_html_translation_table (HTML_ENTITIES);

   $trans_tbl = array_flip ($trans_tbl);

   $ret = strtr ($string, $trans_tbl);

   return preg_replace('/&#(\d+);/me', 

      "chr('\\1')",$ret);

}

alan at akbkhome dot com
03-Jun-2002 10:00


If you want to decode all those &#123; symbols as well.... 



function unhtmlentities ($string)  {

    $trans_tbl = get_html_translation_table (HTML_ENTITIES);

    $trans_tbl = array_flip ($trans_tbl);

    $ret = strtr ($string, $trans_tbl);

    return  preg_replace('/\&\#([0-9]+)\;/me', 

        "chr('\\1')",$ret);

}

dirk at hartmann dot net
19-Jun-2001 01:41


get_html_translation_table


It works only with the first 256 Codepositions.


For Higher Positions, for Example &#1092;


(a kyrillic Letter) it shows the same.

add a note

MANUAL DE PHP

windsurf mercedes camper

get_html_translation_table

DescripciÃ³n