# mb_strwidth

(PHP 4 >= 4.0.6, PHP 5)

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.

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().