Multibyte String 函数
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mb_internal_encoding

(PHP 4 >= 4.0.6, PHP 5)

mb_internal_encoding — Set/Get internal character encoding

说明

mixed mb_internal_encoding ([ string $encoding = mb_internal_encoding() ] )

Set/Get the internal character encoding

参数

encoding

encoding is the character encoding name used for the HTTP input character encoding conversion, HTTP output character encoding conversion, and the default character encoding for string functions defined by the mbstring module.

返回值

If encoding is set, then 成功时返回 TRUE， 或者在失败时返回 FALSE. If encoding is omitted, then the current character encoding name is returned.

范例

Example #1 mb_internal_encoding() example

<?php
/* Set internal character encoding to UTF-8 */
mb_internal_encoding("UTF-8");

/* Display current internal character encoding */
echo mb_internal_encoding();
?>

参见

Multibyte String 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Set/Get internal character encoding

用户评论:

mdirks at gulfstreamcoach dot com (17-May-2007 04:55)

In response to mortoray at ecircle-ag dot com:

The characters display fine as long as you set the Encoding to something more "Latin 1" compatible (i.e. US-ACSII, ISO-8859-1, ISO-8859-1, or  Windows 1252). PHP.net auto-detects to UTF-8

Joachim Kruyswijk (25-May-2006 08:52)

Especially when writing PHP scripts for use on different servers, it is a very good idea to explicitly set the internal encoding somewhere on top of every document served, e.g.

mb_internal_encoding("UTF-8");

This, in combination with mysql-statement "SET NAMES 'utf8'", will save a lot of debugging trouble.

Also, use the multi-byte string functions instead of the ones you may be used to, e.g. mb_strlen() instead of strlen(), etc.

mortoray at ecircle-ag dot com (27-May-2005 12:10)

To previous example, the PHP notes don't appear to support umlauted characters so there are question marks  (?) there instead of what should be umlauated oue.  Just substitute any high-order/accented character to see the effect.

mortoray at ecircle-ag dot com (27-May-2005 07:58)

Be aware that the strings in your source files must match the encoding you specify by mb_internal_encoding.  It appears the Parser loads raw bytes from the file and refers to its internal encoding to determine their actual encoding.

To demonstrate, the following outputs as espected when the /source/ file is Latin-1 encoded:

<?php
    mb_internal_encoding("iso-8859-1");
    mb_http_output( "UTF-8" );
    ob_start("mb_output_handler");

    echo "<br/>";

    ?>

Now, a typical use of mb_internal_encoding is shown as follows.  Make the change to "utf-8" but leave the /source/ file encoding unchanged:

<?php
    mb_internal_encoding("UTF-8");
    mb_http_output( "UTF-8" );
    ob_start("mb_output_handler");

    echo "<br/>";

    ?>

The output will just show the <br/> tag and no text.

Save the file as UTF-8 encoding and then the results will be as expected.