International PHP Conference 2015


(PHP 4 >= 4.0.6, PHP 5)

mb_strwidthReturn width of string


int mb_strwidth ( string $str [, string $encoding = mb_internal_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



The string being decoded.


The encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used.

Return Values

The width of string str.

See Also

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