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()
(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_strwidth — Return width of string
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.
stringThe string being decoded.
encodingDer Parameter encoding
legt die Zeichenkodierung fest. Wird er nicht übergeben, so wird die interne
Zeichenkodierung genutzt.
The width of string string.
| Version | Beschreibung |
|---|---|
| 8.0.0 |
encoding ist nun nullable (akzeptiert den
null-Wert).
|
Beispiel #1 mb_strwidth() example
<?php
var_dump(
mb_strwidth('a'), // LATIN SMALL LETTER A
mb_strwidth("\u{ff41}") // FULLWIDTH LATIN SMALL LETTER A
);
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
int(1) int(2)
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()