String Functions
PHP Manual

get_html_translation_table

(PHP 4, PHP 5)

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

Description

array get_html_translation_table ([ int $table = HTML_SPECIALCHARS [, int $flags = ENT_COMPAT | ENT_HTML401 [, string $encoding = "UTF-8" ]]] )

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

Note:

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().

Parameters

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_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.

The following character sets are supported:

Supported charsets
Charset Aliases Description
ISO-8859-1 ISO8859-1 Western European, Latin-1.
ISO-8859-5 ISO8859-5 Little used cyrillic charset (Latin/Cyrillic).
ISO-8859-15 ISO8859-15 Western European, Latin-9. Adds the Euro sign, French and Finnish letters missing in Latin-1 (ISO-8859-1).
UTF-8   ASCII compatible multi-byte 8-bit Unicode.
cp866 ibm866, 866 DOS-specific Cyrillic charset.
cp1251 Windows-1251, win-1251, 1251 Windows-specific Cyrillic charset.
cp1252 Windows-1252, 1252 Windows specific charset for Western European.
KOI8-R koi8-ru, koi8r Russian.
BIG5 950 Traditional Chinese, mainly used in Taiwan.
GB2312 936 Simplified Chinese, national standard character set.
BIG5-HKSCS   Big5 with Hong Kong extensions, Traditional Chinese.
Shift_JIS SJIS, SJIS-win, cp932, 932 Japanese
EUC-JP EUCJP, eucJP-win Japanese
MacRoman   Charset that was used by Mac OS.
''   An empty string activates detection from script encoding (Zend multibyte), default_charset and current locale (see nl_langinfo() and setlocale()), in this order. Not recommended.

Note: Any other character sets are not recognized. The default encoding will be used instead and a warning will be emitted.

Return Values

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

Changelog

Version Description
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.

Examples

Example #1 Translation Table Example

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

The above example will output something similar to:

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;"
  // ...
}

See Also

String Functions
PHP Manual