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(PHP 4 >= 4.3.0, PHP 5)

html_entity_decode --  Convert all HTML entities to their applicable characters

Description

string html_entity_decode ( string string [, int quote_style [, string charset]] )

html_entity_decode() is the opposite of htmlentities() in that it converts all HTML entities to their applicable characters from string .

The optional second quote_style parameter lets you define what will be done with 'single' and "double" quotes. It takes on one of three constants with the default being ENT_COMPAT :

Table 1. Available quote_style constants

Constant Name Description ENT_COMPAT Will convert double-quotes and leave single-quotes alone. ENT_QUOTES Will convert both double and single quotes. ENT_NOQUOTES Will leave both double and single quotes unconverted.

The ISO-8859-1 character set is used as default for the optional third charset . This defines the character set used in conversion.

Following character sets are supported in PHP 4.3.0 and later.

Table 2. Supported charsets

Charset Aliases Description ISO-8859-1 ISO8859-1 Western European, Latin-1 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. This charset is supported in 4.3.2. cp1251 Windows-1251, win-1251, 1251 Windows-specific Cyrillic charset. This charset is supported in 4.3.2. cp1252 Windows-1252, 1252 Windows specific charset for Western European. KOI8-R koi8-ru, koi8r Russian. This charset is supported in 4.3.2. 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, 932 Japanese EUC-JP EUCJP Japanese

Example 1. Decoding HTML entities

<?php
$orig = "I'll \"walk\" the <b>dog</b> now";

$a = htmlentities($orig);

$b = html_entity_decode($a);

echo $a; // I'll &quot;walk&quot; the &lt;b&gt;dog&lt;/b&gt; now

echo $b; // I'll "walk" the <b>dog</b> now


// For users prior to PHP 4.3.0 you may do this:
function unhtmlentities($string) 
{
    $trans_tbl = get_html_translation_table(HTML_ENTITIES);
    $trans_tbl = array_flip($trans_tbl);
    return strtr($string, $trans_tbl);
}

$c = unhtmlentities($a);

echo $c; // I'll "walk" the <b>dog</b> now

?>

Related Function(s)

htmlentities()

trim()

htmlspecialchars()

get_html_translation_table()

urldecode()