get_html_translation_table

(PHP 4, PHP 5, PHP 7, PHP 8)

get_html_translation_table — Returns the translation table used by htmlspecialchars() and htmlentities()

Descrição

get_html_translation_table(int $table = HTML_SPECIALCHARS, int $flags = ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, string $encoding = "UTF-8"): array

get_html_translation_table() will return the translation table that is used internally for htmlspecialchars() and htmlentities().

Nota:
Special characters can be encoded in several ways. E.g. " can be encoded as ", " or &#x22. get_html_translation_table() returns only the form used by htmlspecialchars() and htmlentities().

Parâmetros

table

Which table to return. Either HTML_ENTITIES or HTML_SPECIALCHARS.

flags

A bitmask of one or more of the following flags, which specify which quotes the table will contain as well as which document type the table is for. The default is ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401.

**Available `flags` constants**
Constant Name	Description
`ENT_COMPAT`	Table will contain entities for double-quotes, but not for single-quotes.
`ENT_QUOTES`	Table will contain entities for both double and single quotes.
`ENT_NOQUOTES`	Table will neither contain entities for single quotes nor for double quotes.
`ENT_SUBSTITUTE`	Replace invalid code unit sequences with a Unicode Replacement Character U+FFFD (UTF-8) or � (otherwise) instead of returning an empty string.
`ENT_HTML401`	Table for HTML 4.01.
`ENT_XML1`	Table for XML 1.
`ENT_XHTML`	Table for XHTML.
`ENT_HTML5`	Table for HTML 5.

encoding

Encoding to use. If omitted, the default value for this argument is UTF-8.

Os seguintes conjuntos de caracteres são suportados:

**Conjuntos de caracteres suportados**
Conjunto de caracteres	Apelidos	Descrição
ISO-8859-1	ISO8859-1	Western European, Latin-1.
ISO-8859-5	ISO8859-5	Conjunto de caracteres cirílicos pouco usado (Latim/Cirílico).
ISO-8859-15	ISO8859-15	Western European, Latin-9. Adiciona o símbolo do Euro, letras Francesas e Filandesas faltando no Latin-1 (ISO-8859-1).
UTF-8		Código de multi-byte 8-bit Unicode compatível com ASCII.
cp866	ibm866, 866	Conjunto de caracteres do DOS específico para o Russo.
cp1251	Windows-1251, win-1251, 1251	Conjunto de caracteres do Windows específico para o Russo.
cp1252	Windows-1252, 1252	Conjunto de caracteres do Windows específico para a Europa Ocidental.
KOI8-R	koi8-ru, koi8r	Russo.
BIG5	950	Chinês Tradicional, usado principalmente em Taiwan.
GB2312	936	Chins Simplificado, conjunto de caracteres padrão nacional.
BIG5-HKSCS		Big5 com extenções de Hong Kong, Chinês Tradicional.
Shift_JIS	SJIS, SJIS-win, cp932, 932	Japonês
EUC-JP	EUCJP, eucJP-win	Japonês
MacRoman		Conjunto de caracteres que era usado pelo Mac OS.
`''`		Uma string vazia ativa a detecção a partir de codificação de script (multibyte Zend), conjunto padrão de caracteres e localidade atual (consulte nl_langinfo() e setlocale()), nesta ordem. Não recomendado.

Nota: Nenhum outro conjunto de caracteres é reconhecido. A codificação padrão será usada no lugar e um alerta será emitido.

Valor Retornado

Returns the translation table as an array, with the original characters as keys and entities as values.

Registro de Alterações

Versão	Descrição
8.1.0	`flags` changed from `ENT_COMPAT` to `ENT_QUOTES` \| `ENT_SUBSTITUTE` \| `ENT_HTML401`.

Exemplos

Exemplo #1 Translation Table Example

<?php
var_dump(get_html_translation_table(HTML_ENTITIES, ENT_QUOTES | ENT_HTML5));
?>

O exemplo acima produzirá algo semelhante a:

array(1510) {
  ["
"]=>
  string(9) "&NewLine;"
  ["!"]=>
  string(6) "&excl;"
  ["""]=>
  string(6) "&quot;"
  ["#"]=>
  string(5) "&num;"
  ["$"]=>
  string(8) "&dollar;"
  ["%"]=>
  string(8) "&percnt;"
  ["&"]=>
  string(5) "&amp;"
  ["'"]=>
  string(6) "&apos;"
  // ...
}

Veja Também

htmlspecialchars() - Convert special characters to HTML entities
htmlentities() - Convert all applicable characters to HTML entities
html_entity_decode() - Convert HTML entities to their corresponding characters

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User Contributed Notes 13 notes

down

kevin at cwsmailbox dot xom ¶

14 years ago


Be careful using get_html_translation_table() in a loop, as it's very slow.

down

michael dot genesis at gmail dot com ¶

13 years ago


The fact that MS-word and some other sources use CP-1252, and that it is so close to Latin1 ('ISO-8859-1') causes a lot of confusion. What confused me the most was finding that mySQL uses CP-1252 by default.



You may run into trouble if you find yourself tempted to do something like this:

<?php

    $trans[chr(149)] = '&bull;';    // Bullet

    $trans[chr(150)] = '&ndash;';    // En Dash

    $trans[chr(151)] = '&mdash;';    // Em Dash

    $trans[chr(152)] = '&tilde;';    // Small Tilde

    $trans[chr(153)] = '&trade;';    // Trade Mark Sign

?>



Don't do it. DON'T DO IT!



You can use:

<?php

    $translationTable = get_html_translation_table(HTML_ENTITIES, ENT_NOQUOTES, 'WINDOWS-1252');

?>



or just convert directly:

<?php

    $output = htmlentities($input, ENT_NOQUOTES, 'WINDOWS-1252');

?>



But your web page is probably encoded UTF-8, and you probably don't really want CP-1252 text flying around, so fix the character encoding first:

<?php

    $output = mb_convert_encoding($input, 'UTF-8', 'WINDOWS-1252');

    $ouput = htmlentities($output);

?>

down

Kenneth Kin Lum ¶

16 years ago


to display the mapping on a webpage no matter what the server encoding is, this can be used

  echo "<pre>\n";
  echo htmlentities(print_r((get_html_translation_table(HTML_SPECIALCHARS)), true));
  echo htmlentities(print_r((get_html_translation_table(HTML_ENTITIES)), true));

since get_html_translation_table() actually gives the special chars in iso-8859-1 (Latin-1) encoding, so to see the tables correctly using

  print_r(get_html_translation_table(HTML_ENTITIES));

your server needs to give a HTTP header as iso-8859-1, unless you use header() or manually set the browser's encoding setting to iso-8859-1.  And you need to view the source of the page to see the mapping.  (except English version of IE 7 outputs the page source as iso-8859-1 anyway).

down

dirk at hartmann dot net ¶

23 years ago


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.

down

iain (duh) workingsoftware.com.au ¶

17 years ago


I wrote a quick little function for converting something like '&middot;' into '&#183;':

$to_convert = '&middot;'; 
$table = get_html_translation_table(HTML_ENTITIES);
$equiv = '&#'.ord(array_search($to_convert,$table)).';';

down

Patrick nospam at nospam mesopia dot com ¶

19 years ago


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

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-1

Jérôme Jaglale ¶

17 years ago


htmlentities includes htmlspecialchars, so here's how to convert an UTF-8 string :
htmlentities($string, ENT_QUOTES, 'UTF-8');

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-2

Maurizio Siliani at trident dot it ¶

17 years ago


If you have troubles (like me) getting data from ISO-8859-1 encoded forms where user copy and paste from word, this routine could be useful.
It adds to the standard get_html_translation_table the codes of the characters usually M$ Word replacs into typed text.
Otherwise those characters would never be displayed correctly in html output.

function get_html_translation_table_CP1252() {
    $trans = get_html_translation_table(HTML_ENTITIES);
    $trans[chr(130)] = '&sbquo;';    // Single Low-9 Quotation Mark
    $trans[chr(131)] = '&fnof;';    // Latin Small Letter F With Hook
    $trans[chr(132)] = '&bdquo;';    // Double Low-9 Quotation Mark
    $trans[chr(133)] = '&hellip;';    // Horizontal Ellipsis
    $trans[chr(134)] = '&dagger;';    // Dagger
    $trans[chr(135)] = '&Dagger;';    // Double Dagger
    $trans[chr(136)] = '&circ;';    // Modifier Letter Circumflex Accent
    $trans[chr(137)] = '&permil;';    // Per Mille Sign
    $trans[chr(138)] = '&Scaron;';    // Latin Capital Letter S With Caron
    $trans[chr(139)] = '&lsaquo;';    // Single Left-Pointing Angle Quotation Mark
    $trans[chr(140)] = '&OElig;    ';    // Latin Capital Ligature OE
    $trans[chr(145)] = '&lsquo;';    // Left Single Quotation Mark
    $trans[chr(146)] = '&rsquo;';    // Right Single Quotation Mark
    $trans[chr(147)] = '&ldquo;';    // Left Double Quotation Mark
    $trans[chr(148)] = '&rdquo;';    // Right Double Quotation Mark
    $trans[chr(149)] = '&bull;';    // Bullet
    $trans[chr(150)] = '&ndash;';    // En Dash
    $trans[chr(151)] = '&mdash;';    // Em Dash
    $trans[chr(152)] = '&tilde;';    // Small Tilde
    $trans[chr(153)] = '&trade;';    // Trade Mark Sign
    $trans[chr(154)] = '&scaron;';    // Latin Small Letter S With Caron
    $trans[chr(155)] = '&rsaquo;';    // Single Right-Pointing Angle Quotation Mark
    $trans[chr(156)] = '&oelig;';    // Latin Small Ligature OE
    $trans[chr(159)] = '&Yuml;';    // Latin Capital Letter Y With Diaeresis
    ksort($trans);
    return $trans;
}

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-3

Alex Minkoff ¶

19 years ago


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. ;)

down

-3

kumar at chicagomodular.com ¶

22 years ago


without heavy scientific analysis, this seems to work as a quick fix to making text originating from a Microsoft Word document display as HTML:



<?php

function DoHTMLEntities ($string)

    {

        $trans_tbl = get_html_translation_table (HTML_ENTITIES);

        

        // MS Word strangeness.. 

        // smart single/ double quotes:

        $trans_tbl[chr(145)] = '\''; 

        $trans_tbl[chr(146)] = '\''; 

        $trans_tbl[chr(147)] = '&quot;'; 

        $trans_tbl[chr(148)] = '&quot;'; 



                // Acute 'e'

        $trans_tbl[chr(142)] = '&eacute;';

        

        return strtr ($string, $trans_tbl);

    }

?>

down

-6

robertn972 at gmail dot com ¶

16 years ago


I found this useful in converting latin characters



<?php

function convertLatin1ToHtml($str) { 

$allEntities = get_html_translation_table(HTML_ENTITIES, ENT_NOQUOTES); 

$specialEntities = get_html_translation_table(HTML_SPECIALCHARS, ENT_NOQUOTES); 

$noTags = array_diff($allEntities, $specialEntities); 

$str = strtr($str, $noTags); 

return $str; 

}

?>

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-5

kevin_bro at hostedstuff dot com ¶

21 years ago


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);
}

down

-8

alan at akbkhome dot com ¶

22 years ago


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);
}

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