mb_strwidth

(PHP 4 >= 4.0.6, PHP 5)

mb_strwidth — Return width of string

說明

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

參數

str: The string being decoded.
encoding: encoding 參數為字元編碼。如果省略，則使用內部字元編碼。

回傳值

The width of string str.

參見

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

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User Contributed Notes 2 notes

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Anonymous ¶

16 years ago


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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Adam Altman ¶

10 years ago


Important, if you're looking to trim/cut/truncate a string so that it will fit a certain byte size (for example to fit in a database field), look at:  mb_strcut()

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