PHP 7.2.7 Released

mb_strimwidth

(PHP 4 >= 4.0.6, PHP 5)

mb_strimwidthGet truncated string with specified width

Opis

string mb_strimwidth ( string $str , int $start , int $width [, string $trimmarker [, string $encoding ]] )

Truncates string str to specified width.

Parametry

str

The string being decoded.

start

The start position offset. Number of characters from the beginning of string. (First character is 0)

width

The width of the desired trim.

trimmarker

A string that is added to the end of string when string is truncated.

encoding

Parametr encoding określa kodowanie znaków. Jeśli nie jest podany, to zostanie użyta wewnętrzna wartość kodowania zanków.

Zwracane wartości

The truncated string. If trimmarker is set, trimmarker is appended to the return value.

Przykłady

Przykład #1 mb_strimwidth() example

<?php
echo mb_strimwidth("Hello World"010"...");
// outputs Hello W...
?>

Zobacz też:

add a note add a note

User Contributed Notes 4 notes

up
9
josiah dot ritchie at gmail dot com
10 years ago
While having the option to append a string to the end is nice, you can run into the problem of having a space between the append if the width is truncated after a space. I find something like this to be more attractive in the output, although messy in the code.

rtrim(mb_strimwidth($string, 0, 24))."..."
up
-1
felixstar4 at gmail dot com
2 months ago
Note that the trimmarker removes characters from the end of the string to trim, so

$hello = 'Lorem ipsum dolor sit amet, lorem ipsum';
$trimmarker = '......................';
echo mb_strimwidth($hello, 0, 20,  $trimmarker);

will only add the values of the trim marker, as the character number of $trimmarker is longer than the specified value to trim to, so it will return:
......................
It is therefore better to use this:
mb_strimwidth($hello, 0, 20). $trimmarker;
as the trimmarker won't remove characters of the string in order to make space for itself. It will return:
Lorem ipsum dolor si......................
up
-15
CBieser
9 years ago
<?php
function strimwidthCenter( $value, $length = 40 ) {
   
$valueEncoding = mb_detect_encoding( $value, 'auto', true );
    if (
$length >= mb_strwidth( $value, $valueEncoding ) ) {
        return
$value;
    }
   
$limited = '';
   
$firstWidth = ceil( $length/2 );
   
$secondStart = mb_strwidth( $value, $valueEncoding ) - ( $length - $firstWidth );
   
$secondWidth = $length - $firstWidth +1;
   
$limited = mb_strimwidth( $value, 0, $firstWidth, '...', $valueEncoding ) . mb_substr( $value, $secondStart, $secondWidth, $valueEncoding );
    return
$limited;
}
?>
up
-54
Rich Mehta
4 years ago
I had a problem (as in another comment) with a space being between the trailing dots and the subject being truncated. Here's how I fixed it:

<?php str_replace( " .", ".", mb_strimwidth( $subject, 0, 30, "..." ) ); ?>
To Top