(PHP 4 >= 4.0.6, PHP 5, PHP 7)
mb_strimwidth — Get truncated string with specified width
$str
, int $start
, int $width
[, string $trimmarker = ""
[, string $encoding = mb_internal_encoding()
]] )
Truncates string str to specified width.
strThe string being decoded.
startThe start position offset. Number of characters from the beginning of string. (First character is 0)
widthThe width of the desired trim.
trimmarkerA string that is added to the end of string when string is truncated.
encodingThe encoding
parameter is the character encoding. If it is omitted, the internal character
encoding value will be used.
The truncated string. If trimmarker is set,
trimmarker is appended to the return value.
Example #1 mb_strimwidth() example
<?php
echo mb_strimwidth("Hello World", 0, 10, "...");
// outputs Hello W...
?>
While having the option to append a string to the end is nice, you can run into the problem of having a space between the append if the width is truncated after a space. I find something like this to be more attractive in the output, although messy in the code.
rtrim(mb_strimwidth($string, 0, 24))."..."
<?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;
}
?>
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, "..." ) ); ?>
