6 * @subpackage PluginsModifier
10 * Smarty truncate modifier plugin
14 * Purpose: Truncate a string to a certain length if necessary,
15 * optionally splitting in the middle of a word, and
16 * appending the $etc string or inserting $etc into the middle.
18 * @link http://smarty.php.net/manual/en/language.modifier.truncate.php truncate (Smarty online manual)
19 * @author Monte Ohrt <monte at ohrt dot com>
20 * @param string $string input string
21 * @param integer $length lenght of truncated text
22 * @param string $etc end string
23 * @param boolean $break_words truncate at word boundary
24 * @param boolean $middle truncate in the middle of text
25 * @return string truncated string
27 function smarty_modifier_truncate($string, $length = 80, $etc = '...',
28 $break_words = false, $middle = false)
33 if (is_callable('mb_strlen')) {
34 if (mb_detect_encoding($string, 'UTF-8, ISO-8859-1') === 'UTF-8') {
35 // $string has utf-8 encoding
36 if (mb_strlen($string) > $length) {
37 $length -= min($length, mb_strlen($etc));
38 if (!$break_words && !$middle) {
39 $string = preg_replace('/\s+?(\S+)?$/u', '', mb_substr($string, 0, $length + 1));
42 return mb_substr($string, 0, $length) . $etc;
44 return mb_substr($string, 0, $length / 2) . $etc . mb_substr($string, - $length / 2);
51 // $string has no utf-8 encoding
52 if (strlen($string) > $length) {
53 $length -= min($length, strlen($etc));
54 if (!$break_words && !$middle) {
55 $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length + 1));
58 return substr($string, 0, $length) . $etc;
60 return substr($string, 0, $length / 2) . $etc . substr($string, - $length / 2);