get_html_translation

Description

array get_html_translation_table ( [int table [, int quote_style]] )

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

There are two new constants (HTML_ENTITIES, HTML_SPECIALCHARS) that allow you to specify the table you want. Default value for table is HTML_SPECIALCHARS. And as in the htmlspecialchars() and htmlentities() functions you can optionally specify the quote_style you are working with. The default is ENT_COMPAT mode. See the description of these modes in htmlspecialchars().

注: Special characters can be encoded in several ways. E.g. " can be encoded as ", " or &#x22. get_html_translation_table() returns only the most common form for them.

例子 1. Translation Table Example
<?php $trans = get_html_translation_table(HTML_ENTITIES); $str = "Hallo & <Frau> & Krmer"; $encoded = strtr($str, $trans); ?>
The $encoded variable will now contain: "Hallo & <Frau> & Krämer".

add a note User Contributed Notes

trukin at gmail dot com
30-Oct-2006 03:25


There have been issues when hispanic websites or other websites dont use the corrent collision in mysql.



Some problems result that the accents ( ... ) result in weird characters when a backup is done and restored later on. Or when database is changed to another one.



To fix this try something like this

function accents($text){

    foreach(get_html_translation_table(HTML_ENTITIES) as $a=>$b){

        $text = str_replace($a,$b,$text);    

    }

    return $text;

}



and use as accents("Hello ....... WITH ACCENTS") and it will return the escaped string.

edwardzyang at thewritingpot dot com
23-Jul-2006 10:04


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
30-May-2005 10:00


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
19-May-2005 07:30


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
27-Jan-2005 06:05


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 10:06


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
04-Jun-2002 01:00


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
20-Jun-2001 04:41


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.

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