AnsiToUnicode (Function)

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Conversion in PHP

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AnsiToUnicode (Function)

In french: AnsiVersUnicode

Converts:

a character string in ANSI (Windows) format into a character string in Unicode format.
a buffer containing a string in ANSI (Windows) format into a buffer containing a string in Unicode format.

Reminder:

ANSI is the character set used in Windows.
Unicode is a character encoding standard. Unicode is used to manage different languages and character sets.

Example

MonBufferUnicode is Buffer
// Conversion du buffer MonBufferAnsi
// contenant une chaîne de caractères au format ANSI
// en un buffer contenant une chaîne de caractères au format Unicode
MonBufferUnicode = AnsiToUnicode(MonBufferAnsi)

// Code à utiliser dans un projet non Unicode
MaChaîneUnicode is string Unicode
MaChaîneUnicode = AnsiToUnicode("Le développement facile", charsetGreek)

Syntax

Converting an ANSI character string Hide the details

<Result> = AnsiToUnicode(<String to convert> [, <Charset>])

<Result>: Unicode string

Unicode string.
EOT if a conversion problem occurred.

<String to convert>: Character string

ANSI string to convert.

<Charset>: Optional Integer constant

Character set that will be used for the conversion.
charsetAnsi Roman characters in ANSI standard.
charsetArabic Arabic characters.
charsetBaltic Baltic characters.
charsetChinese Chinese characters (People's Republic of China).
charsetCurrent
(Default value) Uses the current character set specified with ChangeCharset (charsetOccidental by default).
charsetDefault Uses the computer's default character set. No character set is forced.
charsetEastEurope Eastern European characters (Polish, etc.)
charsetGreek Greek characters.
charsetHebrew Hebrew characters.
charsetJapanese Japanese characters.
charsetKorean Korean characters
charsetMac Mac Roman character set (used in previous versions of Macintosh).
charsetRussian Russian characters.
charsetThai Thai characters;.
charsetTraditionalChinese Traditional Chinese characters (Republic of Taiwan).
charsetTurkish Turkish characters.
charsetUTF8 Used to manage UTF-8 (used in XML, for example).
charsetVietnamese Vietnamese characters.

Converting a buffer containing an ANSI string Hide the details

<Result> = AnsiToUnicode(<Buffer> [, <Charset>])

<Result>: Buffer

Buffer containing a string in Unicode format.
EOT if a conversion problem occurred.

<Buffer>: Buffer

Buffer containing an ANSI string to convert. If <Buffer> contains a string in Unicode format, <Résultat> will contain an invalid string.

<Charset>: Optional Integer constant

Character set that will be used for the conversion.
charsetAnsi Roman characters in ANSI standard.
charsetArabic Arabic characters.
charsetBaltic Baltic characters.
charsetChinese Chinese characters (People's Republic of China).
charsetCurrent
(Default value) Current character set specified with ChangeCharset (charsetOccidental by default).
charsetDefault Uses the computer's default character set. No character set is forced.
charsetEastEurope Eastern European characters (Polish, etc.).
charsetGreek Greek characters.
charsetHebrew Hebrew characters.
charsetJapanese Japanese characters.
charsetKorean Korean characters.
charsetMac Mac Roman character set (used in previous versions of Macintosh).
charsetOccidental Roman characters in ANSI standard.
charsetRussian Russian characters.
charsetThai Thai characters;.
charsetTraditionalChinese Traditional Chinese characters (Republic of Taiwan).
charsetTurkish Turkish characters.
charsetUTF8 Used to manage UTF-8 (used in XML, for example).
charsetVietnamese Vietnamese characters.

Remarks

Conversion result

The result of the conversion is a string or buffer in Unicode format. This string (or buffer) can therefore only be manipulated by variables and functions that handle Unicode format.

In the event of confusion between a string in Unicode format and a string in ANSI format, conversion will be implicitly performed.

For more details on Unicode, see Unicode management.

Conversion in PHP

The conversion in PHP uses the following extensions:

the php_iconv.dll extension
the php_mbstring.dll extension

If none of these PHP extensions are used, only Latin characters will be converted (e.g., Chinese or Russian characters will not be converted).

The php_iconv.dll and php_mbstring.dll extensions are currently proposed on PHP servers. To find out if your host offers these extensions, simply enter the following information into a search engine: phpinfo <Host Name>.

To install these extensions on your own PHP server, simply uncomment the desired extension in the PHP.INI file.

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