get_html_translation_table()

(PHP 4, PHP 5, PHP 7)

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

说明

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

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

参数

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

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 isENT_COMPAT | ENT_HTML401.

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.

支持以下字符集：

Note:其他字符集没有认可。将会使用默认编码并抛出异常。

返回值

将转换表作为一个数组返回。

更新日志

范例

Translation Table Example

以上例程的输出类似于：

array(1510) {
  ["
"]=>
  string(9) "
"
  ["!"]=>
  string(6) "!"
  ["""]=>
  string(6) """
  ["#"]=>
  string(5) "#"
  ["$"]=>
  string(8) "$"
  ["%"]=>
  string(8) "%"
  ["&"]=>
  string(5) "&"
  ["'"]=>
  string(6) "'"
  // ...
}

参见

• htmlspecialchars()将特殊字符转换为 HTML 实体
• htmlentities()将字符转换为 HTML 转义字符
• html_entity_decode()Convert HTML entities to their corresponding characters

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

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:

Don't do it. DON'T DO IT!
You can use:

or just convert directly:

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:

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

returns the single quote ' as being equal to ' while

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

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)).';';

to display the mapping on a webpage no matter what the server encoding is, this can be used
 echo "
\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).
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.
without heavy scientific analysis, this seems to work as a quick fix to making text originating from a Microsoft Word document display as HTML:
htmlentities includes htmlspecialchars, so here's how to convert an UTF-8 string :
htmlentities($string, ENT_QUOTES, 'UTF-8');
If you have troubles (like me) getting data from ISO-8859-1 encoded forms where user copy and paste from word, this routine could be useful.
It adds to the standard get_html_translation_table the codes of the characters usually M$ 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)] = '‚';  // Single Low-9 Quotation Mark
  $trans[chr(131)] = 'ƒ';  // Latin Small Letter F With Hook
  $trans[chr(132)] = '„';  // Double Low-9 Quotation Mark
  $trans[chr(133)] = '…';  // Horizontal Ellipsis
  $trans[chr(134)] = '†';  // Dagger
  $trans[chr(135)] = '‡';  // Double Dagger
  $trans[chr(136)] = 'ˆ';  // Modifier Letter Circumflex Accent
  $trans[chr(137)] = '‰';  // Per Mille Sign
  $trans[chr(138)] = 'Š';  // Latin Capital Letter S With Caron
  $trans[chr(139)] = '‹';  // Single Left-Pointing Angle Quotation Mark
  $trans[chr(140)] = 'Π ';  // 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)] = '˜';  // Small Tilde
  $trans[chr(153)] = '™';  // Trade Mark Sign
  $trans[chr(154)] = 'š';  // Latin Small Letter S With Caron
  $trans[chr(155)] = '›';  // Single Right-Pointing Angle Quotation Mark
  $trans[chr(156)] = 'œ';  // Latin Small Ligature OE
  $trans[chr(159)] = 'Ÿ';  // Latin Capital Letter Y With Diaeresis
  ksort($trans);
  return $trans;
}
If you want to display special HTML entities in a web browser, you can use the following code:

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. ;)
I found this useful in converting latin characters
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);
}
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);
}
 

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