2020-02-16 标签:php,字符串,截取,中文,单字,模式,function,cn,substr,str,slen,startdd,restr,c,len,strlen

//中文截取2，单字节截取模式 function cn_substr($str,$slen,$startdd=0){$restr = "";$c = "";$str_len = strlen($str);if($str_len $startdd) $restr .= $c;if(ord($str[