function CsubStrPro($str, $start, $length, $charset = "utf-8", $suffix = false) { if (function_exists ( "mb_substr" )) return mb_substr ( $str, $start, $length, $charset ); $re ['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/"; $re ['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/"; $re ['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/"; $re ['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/"; preg_match_all ( $re [$charset], $str, $match ); $slice = join ( "", array_slice ( $match [0], $start, $length ) ); if ($suffix) return $slice . "…"; return $slice; }
PHP字符截取函数,兼容各类gbk,utf-8编码
2013-7-5 15:15 Friday
+1
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