纯PHP判断数据格式

           if (!preg_match("/[\x7f-\xff]/", $company_name)) {
                showmessage("单位名称不是中文",HTTP_REFERER,3000);
            }
            $company_names=iconv_strlen($company_name,"UTF-8");
            if($company_names <5 || $company_names >20){
                showmessage("单位名称字数太少或超出",HTTP_REFERER,3000);
            }
            if (!preg_match("/[\x7f-\xff]/", $company_name)) {
                showmessage("单位法人不是中文",HTTP_REFERER,3000);
            }
            $frs=iconv_strlen($fr,"UTF-8");
            if($frs <2 || $frs >5){
                showmessage("单位法人字数太少或超出",HTTP_REFERER,3000);
            }
            if(!preg_match("/^1[34578]{1}\d{9}$/",$mobile)){
                showmessage("联系手机不正确",HTTP_REFERER,3000);
            }