mb_strwidth

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_strwidthReturn width of string

Опис

mb_strwidth(string $string, ?string $encoding = null): int

Returns the width of string string, where halfwidth characters count as 1, and fullwidth characters count as 2. See » http://www.unicode.org/reports/tr11/ for details regarding East Asian character widths.

The fullwidth characters are: U+1100-U+115F, U+11A3-U+11A7, U+11FA-U+11FF, U+2329-U+232A, U+2E80-U+2E99, U+2E9B-U+2EF3, U+2F00-U+2FD5, U+2FF0-U+2FFB, U+3000-U+303E, U+3041-U+3096, U+3099-U+30FF, U+3105-U+312D, U+3131-U+318E, U+3190-U+31BA, U+31C0-U+31E3, U+31F0-U+321E, U+3220-U+3247, U+3250-U+32FE, U+3300-U+4DBF, U+4E00-U+A48C, U+A490-U+A4C6, U+A960-U+A97C, U+AC00-U+D7A3, U+D7B0-U+D7C6, U+D7CB-U+D7FB, U+F900-U+FAFF, U+FE10-U+FE19, U+FE30-U+FE52, U+FE54-U+FE66, U+FE68-U+FE6B, U+FF01-U+FF60, U+FFE0-U+FFE6, U+1B000-U+1B001, U+1F200-U+1F202, U+1F210-U+1F23A, U+1F240-U+1F248, U+1F250-U+1F251, U+20000-U+2FFFD, U+30000-U+3FFFD. All other characters are halfwidth characters.

Параметри

string

The string being decoded.

encoding

Параметром encoding вказується кодування символів. Якщо він пропущений або null, використається внутрішнє кодування.

Значення, що повертаються

The width of string string.

Журнал змін

Версія Опис
8.0.0 encoding тепер може бути null.

Приклади

Приклад #1 mb_strwidth() example

<?php
var_dump
(
mb_strwidth('a'), // LATIN SMALL LETTER A
mb_strwidth("\u{ff41}") // FULLWIDTH LATIN SMALL LETTER A
);
?>

Поданий вище приклад виведе:

int(1)
int(2)

Прогляньте також

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User Contributed Notes 2 notes

up
0
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()
up
0
Anonymous
17 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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