Forgot Password ??

PHP , ASP , ASP.NET, VB.NET, C#, Java , jQuery , Android , iOS , Windows Phone

	Registered : 109,037

HOME > PHP Manual > html_entity_decode - Convert all HTML entities to their applicable characters

ลองใช้ค้นหาข้อมูล

html_entity_decode

(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 .

Parameters

string

The input string.

quote_style

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:
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.

charset

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.
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

Note: Any other character sets are not recognized and ISO-8859-1 will be used instead.

Return Values

Returns the decoded string.

ChangeLog

Version Description

5.0.0 Support for multi-byte character sets was added.

Examples

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)
{
    // replace numeric entities
    $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);
    $string = preg_replace('~&#([0-9]+);~e', 'chr("\\1")', $string);
    // replace literal entities
    $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

?>

Notes

Note: You might wonder why trim(html_entity_decode(' ')); doesn't reduce the string to an empty string, that's because the ' ' entity is not ASCII code 32 (which is stripped by trim()) but ASCII code 160 (0xa0) in the default ISO 8859-1 characterset.

	สอน Google Maps Api
	สอน Windows Service
	สอน Entity Framework
	สอน Android
	สอน Java เขียน Java
	Java GUI Swing
	สอน JSP (Web App)
	iOS (iPhone,iPad)
	Windows Phone
	Windows Azure
	Windows Store
	Laravel Framework
	Yii PHP Framework
	สอน jQuery
	สอน jQuery กับ Ajax
	สอน PHP OOP (Vdo)
	Ajax Tutorials
	SQL Tutorials
	สอน SQL (Part 2)
	JavaScript Tutorial
	Javascript Tips
	VBScript Tutorial
	VBScript Validation
	Microsoft Access
	MySQL Tutorials
	-- Stored Procedure
	MariaDB Database
	SQL Server Tutorial
	SQL Server 2005
	SQL Server 2008
	SQL Server 2012
	-- Stored Procedure
	Oracle Database
	-- Stored Procedure
	SVN (Subversion)
	แนวทางการทำ SEO
	ปรับแต่งเว็บให้โหลดเร็ว