   #PHP Manual Multi-Byte String Functions mb_strtoupper
   mb_substitute_character

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                                  mb_strwidth

   (PHP 4 >= 4.0.6)
   mb_strwidth -- Return width of string

Description

   int mb_strwidth ( string str [, string encoding])

   mb_strwidth() returns width of string str.

   Multi-byte character usually twice of width compare to single byte
   character.

   Table 1. 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

   encoding is character encoding. If it is omitted, internal encoding is
   used.

   See also: mb_strimwidth(), mb_internal_encoding().
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