本文实例讲述了smarty中改进truncate使其支持中文的方法。分享给大家供大家参考，具体如下：
smarty的truncate不支持中文的截取。将smarty目录下plugins中的modifier.truncate.php改成下面这个样子就可以了
<?php/** Smarty plugin* -------------------------------------------------------------* Type: modifier* Name: truncate* Purpose: Truncate a string to a certain length if necessary,* optionally splitting in the middle of a word, and * appending the $etc string.* Update: change substr to msubstr and add fun msubstr.so it* can bu used in chinese charset.* -------------------------------------------------------------*/function smarty_modifier_truncate($string, $length = 80, $etc = '...', $break_words = false){ if ($length == 0) return ''; if (strlen($string) > $length) { $length -= strlen($etc); if (!$break_words) $string = preg_replace('//s+?(/S+)?$/', '', SubstrGB($string, 0, $length+1)); return SubstrGB($string, 0, $length).$etc; } else return $string;}function SubstrGB($str,$start,$len){ for($i=0;$i<$start+$len;$i++){ $tmpstr=(ord($str[$i])>=161 && ord($str[$i])<=254&& ord($str[$i+1])>=161 && ord($str[$i+1])<=254)?$str[$i].$str[++$i]:$tmpstr=$str[$i]; if ($i>=$start&&$i<($start+$len))$tmp .=$tmpstr; } return $tmp;}/* vim: set expandtab: */?>
