PHP 5.4.32 Released

mb_internal_encoding

(PHP 4 >= 4.0.6, PHP 5)

mb_internal_encodingSet/Get internal character encoding

Descrizione

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

Set/Get the internal character encoding

Elenco dei parametri

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. You should notice that the internal encoding is totally different from the one for multibyte regex.

Valori restituiti

If encoding is set, then Restituisce TRUE in caso di successo, FALSE in caso di fallimento. In this case, the character encoding for multibyte regex is NOT changed. If encoding is omitted, then the current character encoding name is returned.

Esempi

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();
?>

Vedere anche:

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User Contributed Notes 5 notes

up
3
mortoray at ecircle-ag dot com
9 years ago
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.
up
1
mdirks at gulfstreamcoach dot com
7 years ago
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
up
0
john leborgne
2 years ago
i noticed that setting mb_internal_encoding('UTF-8') in my global site config.inc.php, doesn't work in my classes : it reverse back to ISO-8859-1.
Adding the call to the constructor of my top site class resolve this.
up
0
Joachim Kruyswijk
8 years ago
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.
up
0
mortoray at ecircle-ag dot com
9 years ago
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.
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