get_html_translation_table

(PHP 4, PHP 5)

get_html_translation_table — 返回使用 htmlspecialchars() 和 htmlentities() 后的转换表

说明

array get_html_translation_table ([ int $table = HTML_SPECIALCHARS [, int $quote_style = ENT_COMPAT ]] )

get_html_translation_table() 将返回 htmlspecialchars() 和 htmlentities() 处理后的转换表。

Note:
特殊字符可以使用多种转换方式。例如： " 可以被转换成 ", " 或者 &#x22. get_html_translation_table() 返回其中最常用的。

参数

table

有两个新的常量 (HTML_ENTITIES, HTML_SPECIALCHARS) 允许你指定你想要的表。

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_COMPAT | 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_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 ISO-8859-1 in versions of PHP prior to 5.4.0, and UTF-8 from PHP 5.4.0 onwards.

以下字符集设置从 PHP 4.3.0 版本开始被支持。

**支持的字符集列表**
字符集	别名	描述
ISO-8859-1	ISO8859-1	西欧，Latin-1
ISO-8859-15	ISO8859-15	西欧，Latin-9。增加欧元符号，法语和芬兰语字母在 Latin-1(ISO-8859-1) 中缺失。
UTF-8		ASCII 兼容的多字节 8 位 Unicode。
cp866	ibm866, 866	DOS 特有的西里尔编码。本字符集在 4.3.2 版本中得到支持。
cp1251	Windows-1251, win-1251, 1251	Windows 特有的西里尔编码。本字符集在 4.3.2 版本中得到支持。
cp1252	Windows-1252, 1252	Windows 特有的西欧编码。
KOI8-R	koi8-ru, koi8r	俄语。本字符集在 4.3.2 版本中得到支持。
BIG5	950	繁体中文，主要用于中国台湾省。
GB2312	936	简体中文，中国国家标准字符集。
BIG5-HKSCS		繁体中文，附带香港扩展的 Big5 字符集。
Shift_JIS	SJIS, 932	日语
EUC-JP	EUCJP	日语

Note: 其他字符集没有认可。可以使用 ISO-8859-1 来替代。

返回值

将转换表作为一个数组返回。

更新日志

版本	说明
5.4.0	The default value for the `encoding` parameter was changed to UTF-8.
5.4.0	The constants `ENT_HTML401`, `ENT_XML1`, `ENT_XHTML` and `ENT_HTML5` were added.
5.3.4	The `encoding` parameter was added.

范例

Example #1 Translation Table Example


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

以上例程的输出类似于：

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

参见

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

PHP手册 - N: 返回使用 htmlspecialchars 和 htmlentities 后的转换表

用户评论:

michael dot genesis at gmail dot com (12-Dec-2011 11:01)

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)] = '•'; // Bullet $trans[chr(150)] = '–'; // En Dash $trans[chr(151)] = '—'; // Em Dash $trans[chr(152)] = '&tilde;'; // Small Tilde $trans[chr(153)] = '™'; // 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); ?>

kevin at cwsmailbox dot xom (15-Sep-2010 05:55)

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

subweb007 at hotmail dot com (09-Apr-2009 09:29)

This function will convert get_html_translation_table from a ISO-8859-1 string to UTF-8 string. <?php function translation_table_to_utf8($arTranslationtable) { //loop through the array and convert everything both keys and values foreach($arTranslationtable as $charkey => $char) { $charkey = utf8_encode($charkey); $arUTFchars[$charkey]= utf8_encode($char); } return $arUTFchars; } //get the translation table $arSpecialchar = get_html_translation_table(HTML_ENTITIES); //call the function to convert to utf-8 $arUTFchars = translation_table_to_utf8($arSpecialchar); print_r($arUTFchars); ?>

Kenneth Kin Lum (23-Sep-2008 01:54)

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).

robertn972 at gmail dot com (22-Jul-2008 04:18)

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; } ?>

adolfoabegg at gmail dot com (03-Jul-2008 08:47)

"rafael at phpit dot com dot br" your solution only works for the ISO-8859-1 encoding, I mean, it works but only for that encoding and that's because get_html_translation_table won't let you specify the charset... it uses the default one, that is ISO-8859-1 The solution from "olito24 at gmx dot de" does work for UTF-8, I just modified it a bit specifying the UTF-8 charset, also the $str parameter wasn't being used at all, I just renamed it to $string Note: Change ENT_NOQUOTES to ENT_QUOTES to convert both double and single quotes These are the functions to encode html but tags using UTF-8 and ISO-8859-1 <?php class Html { /*by olito24 at gmx dot de*/ function htmlButTags($string) { $pattern = '<([a-zA-Z0-9\. "\'_\/-=;?&#%]+)>'; preg_match_all ('/' . $pattern . '/', $string, $tagMatches, PREG_SET_ORDER); $textMatches = preg_split ('/' . $pattern . '/', $string); foreach ($textMatches as $key => $value) { $textMatches [$key] = htmlentities ($value, ENT_NOQUOTES, 'UTF-8'); } for ($i = 0; $i < count ($textMatches); $i ++) { $textMatches [$i] = $textMatches [$i] . $tagMatches [$i] [0]; } return implode ($textMatches); } /*by "rafael at phpit dot com dot br" */ function htmlButTags_iso($str){ // Take all the html entities $caracteres = get_html_translation_table(HTML_ENTITIES,ENT_NOQUOTES); // Find out the "tags" entities $remover = get_html_translation_table(HTML_SPECIALCHARS,ENT_NOQUOTES); // Spit out the tags entities from the original table $caracteres = array_diff($caracteres, $remover); // Translate the string.... $str = strtr($str, $caracteres); // And that's it! return $str; } } ?>

Liam Morland (16-Jun-2008 04:57)

Here is a simple way to convert named character entities to numeric character entities: <?php function numeric_entities($string){ $mapping = array(); foreach (get_html_translation_table(HTML_ENTITIES, ENT_QUOTES) as $char => $entity){ $mapping[$entity] = '&#' . ord($char) . ';'; } return str_replace(array_keys($mapping), $mapping, $string); } ?>

iain (duh) workingsoftware.com.au (07-Sep-2007 10:06)

I wrote a quick little function for converting something like '·' into '·': $to_convert = '·'; $table = get_html_translation_table(HTML_ENTITIES); $equiv = '&#'.ord(array_search($to_convert,$table)).';';

Maurizio Siliani at trident dot it (20-Jul-2007 04:43)

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)] = '…'; // 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)] = '‘'; // Left Single Quotation Mark $trans[chr(146)] = '’'; // Right Single Quotation Mark $trans[chr(147)] = '“'; // Left Double Quotation Mark $trans[chr(148)] = '”'; // Right Double Quotation Mark $trans[chr(149)] = '•'; // Bullet $trans[chr(150)] = '–'; // En Dash $trans[chr(151)] = '—'; // Em Dash $trans[chr(152)] = '&tilde;'; // Small Tilde $trans[chr(153)] = '™'; // 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; }

yes at king22 dot com (10-Apr-2007 04:33)

Searching for a fast replacement of the MS WORD special characters which are not covered by get_html_translation_table() , I think the following function might help someone <?php function clean_up($str){ $str = stripslashes($str); $str = strtr($str, get_html_translation_table(HTML_ENTITIES)); $str = str_replace( array("\x82", "\x84", "\x85", "\x91", "\x92", "\x93", "\x94", "\x95", "\x96", "\x97"), array("‚", "„", "…", "‘", "’", "“", "”", "•", "–", "—"),$str); return $str; } ?> It replaces all types of quotes (single and double), horizontal ellipsis (...), bullet, en dash and em dash.

chris (22-Feb-2007 01:49)

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: '''=>''', '−'=>'-', '&circ;'=>'^', '&tilde;'=>'~', '&Scaron;'=>'', '&lsaquo;'=>'', '&OElig;'=>'', '‘'=>'', '’'=>'', '“'=>'', '”'=>'', '•'=>'', '–'=>'', '—'=>'', '&tilde;'=>'', '™'=>'', '&scaron;'=>'', '&rsaquo;'=>'', '&oelig;'=>'', '&Yuml;'=>'', 'ÿ'=>'ÿ', '&OElig;'=>'Œ', '&oelig;'=>'œ', '&Scaron;'=>'Š', '&scaron;'=>'š', '&Yuml;'=>'Ÿ', '&fnof;'=>'ƒ', '&circ;'=>'ˆ', '&tilde;'=>'˜', 'Α'=>'Α', 'Β'=>'Β', 'Γ'=>'Γ', 'Δ'=>'Δ', 'Ε'=>'Ε', 'Ζ'=>'Ζ', 'Η'=>'Η', 'Θ'=>'Θ', 'Ι'=>'Ι', 'Κ'=>'Κ', 'Λ'=>'Λ', 'Μ'=>'Μ', 'Ν'=>'Ν', 'Ξ'=>'Ξ', 'Ο'=>'Ο', 'Π'=>'Π', 'Ρ'=>'Ρ', 'Σ'=>'Σ', 'Τ'=>'Τ', 'Υ'=>'Υ', 'Φ'=>'Φ', 'Χ'=>'Χ', 'Ψ'=>'Ψ', 'Ω'=>'Ω', 'α'=>'α', 'β'=>'β', 'γ'=>'γ', 'δ'=>'δ', 'ε'=>'ε', 'ζ'=>'ζ', 'η'=>'η', 'θ'=>'θ', 'ι'=>'ι', 'κ'=>'κ', 'λ'=>'λ', 'μ'=>'μ', 'ν'=>'ν', 'ξ'=>'ξ', 'ο'=>'ο', 'π'=>'π', 'ρ'=>'ρ', '&sigmaf;'=>'ς', 'σ'=>'σ', 'τ'=>'τ', 'υ'=>'υ', 'φ'=>'φ', 'χ'=>'χ', 'ψ'=>'ψ', 'ω'=>'ω', '&thetasym;'=>'ϑ', '&upsih;'=>'ϒ', 'ϖ'=>'ϖ', '&ensp;'=>' ', '&emsp;'=>' ', ' '=>' ', '&zwnj;'=>'‌', '&zwj;'=>'‍', '&lrm;'=>'‎', '&rlm;'=>'‏', '–'=>'–', '—'=>'—', '‘'=>'‘', '’'=>'’', '&sbquo;'=>'‚', '“'=>'“', '”'=>'”', '&bdquo;'=>'„', '&dagger;'=>'†', '&Dagger;'=>'‡', '•'=>'•', '…'=>'…', '&permil;'=>'‰', '′'=>'′', '″'=>'″', '&lsaquo;'=>'‹', '&rsaquo;'=>'›', '&oline;'=>'‾', '&frasl;'=>'⁄', '€'=>'€'

chris (22-Feb-2007 01:49)

and a few more : '&image;'=>'ℑ', '&weierp;'=>'℘', '&real;'=>'ℜ', '™'=>'™', '&alefsym;'=>'ℵ', '←'=>'←', '↑'=>'↑', '→'=>'→', '↓'=>'↓', '↔'=>'↔', '&crarr;'=>'↵', '⇐'=>'⇐', '&uArr;'=>'⇑', '⇒'=>'⇒', '&dArr;'=>'⇓', '⇔'=>'⇔', '∀'=>'∀', '∂'=>'∂', '∃'=>'∃', '∅'=>'∅', '∇'=>'∇', '∈'=>'∈', '∉'=>'∉', '&ni;'=>'∋', '∏'=>'∏', '∑'=>'∑', '−'=>'−', '&lowast;'=>'∗', '√'=>'√', '&prop;'=>'∝', '∞'=>'∞', '&ang;'=>'∠', '&and;'=>'∧', '&or;'=>'∨', '∩'=>'∩', '∪'=>'∪', '∫'=>'∫', '&there4;'=>'∴', '&sim;'=>'∼', '&cong;'=>'≅', '≈'=>'≈', '≠'=>'≠', '&equiv;'=>'≡', '≤'=>'≤', '≥'=>'≥', '⊂'=>'⊂', '⊃'=>'⊃', '&nsub;'=>'⊄', '&sube;'=>'⊆', '&supe;'=>'⊇', '&oplus;'=>'⊕', '&otimes;'=>'⊗', '&perp;'=>'⊥', '⋅'=>'⋅', '&lceil;'=>'⌈', '&rceil;'=>'⌉', '&lfloor;'=>'⌊', '&rfloor;'=>'⌋', '&lang;'=>'〈', '&rang;'=>'〉', '&loz;'=>'◊', '&spades;'=>'♠', '&clubs;'=>'♣', '&hearts;'=>'♥', '&diams;'=>'♦'

Jér?me Jaglale (31-Dec-2006 07:43)

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 02:31)

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 07:25)

There have been issues when hispanic websites or other websites dont use the corrent collision in mysql. Some problems result that the accents (é? ... ) 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 03:04)

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).

rbotzer at yahoo dot com (19-Jul-2005 10:10)

The existance of html entities such as " inside an xml node causes most xml parsers to throw an error. The following function cleans an input string by converting html entities to valid unicode entities. <?php function htmlentities2unicodeentities ($input) { $htmlEntities = array_values (get_html_translation_table (HTML_ENTITIES, ENT_QUOTES)); $entitiesDecoded = array_keys (get_html_translation_table (HTML_ENTITIES, ENT_QUOTES)); $num = count ($entitiesDecoded); for ($u = 0; $u < $num; $u++) { $utf8Entities[$u] = '&#'.ord($entitiesDecoded[$u]).';'; } return str_replace ($htmlEntities, $utf8Entities, $input); } ?> So, an input of Copyrights © make "me" grin ® outputs Copyrights © make "me" grin ®

Patrick nospam at nospam mesopia dot com (30-May-2005 03:00)

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 ' while <?php $translatedString = htmlentities($string,ENT_QUOTES); ?> returns it as being equal to ' 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 12:30)

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 10:05)

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); }

pinkpanther at swissonline dot ch (28-Jul-2003 10:29)

In case you want a 'htmlentities' function which prevents 'double' encoding of the ampersands of already present entities (> => &gt;), use this: <?php function htmlentities2($myHTML) { $translation_table=get_html_translation_table (HTML_ENTITIES,ENT_QUOTES); $translation_table[chr(38)] = '&'; return preg_replace("/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/","&" , strtr($myHTML, $translation_table)); } ?>

kevin_bro at hostedstuff dot com (03-Jan-2003 02:06)

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); }

kumar at chicagomodular.com (29-Oct-2002 01:51)

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)] = '"'; $trans_tbl[chr(148)] = '"'; // Acute 'e' $trans_tbl[chr(142)] = 'é'; return strtr ($string, $trans_tbl); } ?>

alan at akbkhome dot com (04-Jun-2002 06:00)

If you want to decode all those { 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 09:41)

get_html_translation_table It works only with the first 256 Codepositions. For Higher Positions, for Example ф (a kyrillic Letter) it shows the same.