mb_strwidth

(PHP 4 >= 4.0.6, PHP 5)

mb_strwidth — Return width of string

Descripción

int mb_strwidth ( string $str [, string $encoding ] )

Returns the width of string str.

Multi-byte characters are usually twice the width of single byte characters.

**Characters width**
Chars	Width
U+0000 - U+0019	0
U+0020 - U+1FFF	1
U+2000 - U+FF60	2
U+FF61 - U+FF9F	1
U+FFA0 -	2

Parámetros

str: The string being decoded.
encoding: El parámetro encoding es la codificación de caracteres. Si es omitido, será usado el valor de la codificación de caracteres interna.

Valores devueltos

The width of string str.

Ver también

mb_strimwidth() - Get truncated string with specified width
mb_internal_encoding() - Set/Get internal character encoding

add a note User Contributed Notes mb_strwidth

larry1chan at gmail dot com 07-Feb-2008 06:38


to convert a multi-byte character into hex strings:



$b = "現，市民派利市的習慣亦有所改變";



    printf("length of string: %d <br>", mb_strlen($b, 'UTF-8'));

    for ($i=0; $i < mb_strlen($b, 'UTF-8'); $i++){

        $ch = mb_substr($b, $i, 1, 'UTF-8');

        $chlen = mb_strwidth($ch, 'UTF-8');

        $hexs = '';

        for ($j=0; $j < $chlen; $j++)

            $hexs = $hexs . sprintf("%x", ord($ch[$j]));

        printf ("width=%d => '%s' |hex=%s<br>", $chlen, $ch, $hexs );

        

        

    }

Anonymous 01-Nov-2007 12:27


Note: mb_strwidth is NOT returning bytes.  It's returning the width of monotype characters.  (In some languages, some characters will take up 2 character widths if displayed in monotype.)

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