招商网站建设/新开店铺怎么做推广

截取含中文的混合字符串长度

    /*** 截取中文混合字符串指定长度* * @param string $string* @param integer $length* @param string $etc 超过长度时的省略符* @param string $charset 字符编码 utf-8 或者 gbk* @return string*/public function truncateCn($string, $length = 80, $etc = '...', $charset = 'utf-8'){if ($length == 0) {return '';}if (function_exists('mb_substr')) {$etc = mb_strlen($string, $charset) > $length ? $etc : '';return mb_substr($string, 0, $length, $charset) . $etc;}if ($charset == 'utf-8') {$pa = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/";}else {$pa = "/[\x01-\x7f]|[\xa1-\xff][\xa1-\xff]/";}preg_match_all($pa, $string, $t_string);if (count($t_string[0]) > $length) {return join('', array_slice($t_string[0], 0, $length)) . $etc;}return join('', array_slice($t_string[0], 0, $length));}