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# get_html_translation_table

(PHP 4, PHP 5)

get_html_translation_table -- Возвращает таблицу преобразований, используемую функциями htmlspecialchars() и htmlentities()

## Описание

array get_html_translation_table ( int table [, int quote_style] )

get_html_translation_table() возвращает таблицу преобразований, используемую функциями htmlspecialchars() и htmlentities().

Константы `HTML_ENTITIES` и `HTML_SPECIALCHARS` позволяют указать нужную таблицу преобразований. Аналогично функциям htmlspecialchars() и htmlentities() можно задать необязательный аргумент `quote_style`, равный по умолчанию `ENT_COMPAT`. Описание `quote_style` см. в описании функции htmlspecialchars().

Пример 1. Пример таблицы преобразований

`<?php $trans = get_html_translation_table(HTML_ENTITIES); $str = "Hallo & <Frau> & Krдmer"; $encoded = strtr($str, $trans); ?>`

Переменная `$encoded` будет содержать: `"Hallo &amp; &lt;Frau&gt; &amp; Kr&auml;mer".`

Другим интересным применением этой функции является измененин направления преобразования с помощью функции array_flip().

`<?php $trans = array_flip($trans); $original = strtr($encoded, $trans); ?>`

Переменная `$original` будет содержать: "Hallo & <Frau> & Krämer".

См. также описание функций htmlspecialchars(), htmlentities(), strtr() и array_flip().

add a note User Contributed Notes
get_html_translation_table
chris
21-Feb-2007 05:49
`A lot of quite common characters (or at least not rare, like oelig, euro or minus) are missing from the table unfortunately.
Here are some, if you want to make your translation table more complete and your xml data less error-prone. Not sure why some characters have 2 codes, just use one. Here goes: '&apos;'=>'&#39;', '&minus;'=>'&#45;', '&circ;'=>'&#94;', '&tilde;'=>'&#126;', '&Scaron;'=>'&#138;', '&lsaquo;'=>'&#139;', '&OElig;'=>'&#140;', '&lsquo;'=>'&#145;', '&rsquo;'=>'&#146;', '&ldquo;'=>'&#147;', '&rdquo;'=>'&#148;', '&bull;'=>'&#149;', '&ndash;'=>'&#150;', '&mdash;'=>'&#151;', '&tilde;'=>'&#152;', '&trade;'=>'&#153;', '&scaron;'=>'&#154;', '&rsaquo;'=>'&#155;', '&oelig;'=>'&#156;', '&Yuml;'=>'&#159;', '&yuml;'=>'&#255;', '&OElig;'=>'&#338;', '&oelig;'=>'&#339;', '&Scaron;'=>'&#352;', '&scaron;'=>'&#353;', '&Yuml;'=>'&#376;', '&fnof;'=>'&#402;', '&circ;'=>'&#710;', '&tilde;'=>'&#732;', '&Alpha;'=>'&#913;', '&Beta;'=>'&#914;', '&Gamma;'=>'&#915;', '&Delta;'=>'&#916;', '&Epsilon;'=>'&#917;', '&Zeta;'=>'&#918;', '&Eta;'=>'&#919;', '&Theta;'=>'&#920;', '&Iota;'=>'&#921;', '&Kappa;'=>'&#922;', '&Lambda;'=>'&#923;', '&Mu;'=>'&#924;', '&Nu;'=>'&#925;', '&Xi;'=>'&#926;', '&Omicron;'=>'&#927;', '&Pi;'=>'&#928;', '&Rho;'=>'&#929;', '&Sigma;'=>'&#931;', '&Tau;'=>'&#932;', '&Upsilon;'=>'&#933;', '&Phi;'=>'&#934;', '&Chi;'=>'&#935;', '&Psi;'=>'&#936;', '&Omega;'=>'&#937;', '&alpha;'=>'&#945;', '&beta;'=>'&#946;', '&gamma;'=>'&#947;', '&delta;'=>'&#948;', '&epsilon;'=>'&#949;', '&zeta;'=>'&#950;', '&eta;'=>'&#951;', '&theta;'=>'&#952;', '&iota;'=>'&#953;', '&kappa;'=>'&#954;', '&lambda;'=>'&#955;', '&mu;'=>'&#956;', '&nu;'=>'&#957;', '&xi;'=>'&#958;', '&omicron;'=>'&#959;', '&pi;'=>'&#960;', '&rho;'=>'&#961;', '&sigmaf;'=>'&#962;', '&sigma;'=>'&#963;', '&tau;'=>'&#964;', '&upsilon;'=>'&#965;', '&phi;'=>'&#966;', '&chi;'=>'&#967;', '&psi;'=>'&#968;', '&omega;'=>'&#969;', '&thetasym;'=>'&#977;', '&upsih;'=>'&#978;', '&piv;'=>'&#982;', '&ensp;'=>'&#8194;', '&emsp;'=>'&#8195;', '&thinsp;'=>'&#8201;', '&zwnj;'=>'&#8204;', '&zwj;'=>'&#8205;', '&lrm;'=>'&#8206;', '&rlm;'=>'&#8207;', '&ndash;'=>'&#8211;', '&mdash;'=>'&#8212;', '&lsquo;'=>'&#8216;', '&rsquo;'=>'&#8217;', '&sbquo;'=>'&#8218;', '&ldquo;'=>'&#8220;', '&rdquo;'=>'&#8221;', '&bdquo;'=>'&#8222;', '&dagger;'=>'&#8224;', '&Dagger;'=>'&#8225;', '&bull;'=>'&#8226;', '&hellip;'=>'&#8230;', '&permil;'=>'&#8240;', '&prime;'=>'&#8242;', '&Prime;'=>'&#8243;', '&lsaquo;'=>'&#8249;', '&rsaquo;'=>'&#8250;', '&oline;'=>'&#8254;', '&frasl;'=>'&#8260;', '&euro;'=>'&#8364;'`
chris
21-Feb-2007 05:49
`and a few more :
'&image;'=>'&#8465;', '&weierp;'=>'&#8472;', '&real;'=>'&#8476;', '&trade;'=>'&#8482;', '&alefsym;'=>'&#8501;', '&larr;'=>'&#8592;', '&uarr;'=>'&#8593;', '&rarr;'=>'&#8594;', '&darr;'=>'&#8595;', '&harr;'=>'&#8596;', '&crarr;'=>'&#8629;', '&lArr;'=>'&#8656;', '&uArr;'=>'&#8657;', '&rArr;'=>'&#8658;', '&dArr;'=>'&#8659;', '&hArr;'=>'&#8660;', '&forall;'=>'&#8704;', '&part;'=>'&#8706;', '&exist;'=>'&#8707;', '&empty;'=>'&#8709;', '&nabla;'=>'&#8711;', '&isin;'=>'&#8712;', '&notin;'=>'&#8713;', '&ni;'=>'&#8715;', '&prod;'=>'&#8719;', '&sum;'=>'&#8721;', '&minus;'=>'&#8722;', '&lowast;'=>'&#8727;', '&radic;'=>'&#8730;', '&prop;'=>'&#8733;', '&infin;'=>'&#8734;', '&ang;'=>'&#8736;', '&and;'=>'&#8743;', '&or;'=>'&#8744;', '&cap;'=>'&#8745;', '&cup;'=>'&#8746;', '&int;'=>'&#8747;', '&there4;'=>'&#8756;', '&sim;'=>'&#8764;', '&cong;'=>'&#8773;', '&asymp;'=>'&#8776;', '&ne;'=>'&#8800;', '&equiv;'=>'&#8801;', '&le;'=>'&#8804;', '&ge;'=>'&#8805;', '&sub;'=>'&#8834;', '&sup;'=>'&#8835;', '&nsub;'=>'&#8836;', '&sube;'=>'&#8838;', '&supe;'=>'&#8839;', '&oplus;'=>'&#8853;', '&otimes;'=>'&#8855;', '&perp;'=>'&#8869;', '&sdot;'=>'&#8901;', '&lceil;'=>'&#8968;', '&rceil;'=>'&#8969;', '&lfloor;'=>'&#8970;', '&rfloor;'=>'&#8971;', '&lang;'=>'&#9001;', '&rang;'=>'&#9002;', '&loz;'=>'&#9674;', '&spades;'=>'&#9824;', '&clubs;'=>'&#9827;', '&hearts;'=>'&#9829;', '&diams;'=>'&#9830;'`
Jérôme Jaglale
31-Dec-2006 11:43
`htmlentities includes htmlspecialchars, so here's how to convert an UTF-8 string :
htmlentities($string, ENT_QUOTES, 'UTF-8');`
zohar at zohararad dot com
04-Dec-2006 06:31
`Another way of converting HTML entities into numeric entities to please XML parsers is using two arrays as conversion tables in a preg_replace function. The conversion table mechanism is based on Ryan's examples above.
<?php
function xmlEntities($s){
//build first an assoc. array with the entities we want to match
$table1 = get_html_translation_table(HTML_ENTITIES, ENT_QUOTES);
//now build another assoc. array with the entities we want to replace (numeric entities)
foreach ($table1 as $k=>$v){
$table1[$k] = "/$v/";
$c = htmlentities($k,ENT_QUOTES,"UTF-8");
$table2[$c] = "&#".ord($k).";";
}
//now perform a replacement using preg_replace
//each matched value in array 1 will be replaced with the corresponding value in array 2
$s = preg_replace($table1,$table2,$s);
return $s;
}
?>`
trukin at gmail dot com
29-Oct-2006 11:25
`There have been issues when hispanic websites or other websites dont use the corrent collision in mysql.
Some problems result that the accents (éä ... ) result in weird characters when a backup is done and restored later on. Or when database is changed to another one.
To fix this try something like this
function accents($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 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
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Last updated: Sat, 27 Jan 2007
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