php更新mysql后获取改变行数的方法

found_rows():select
row_count(): update delete insert

drop database if exists `mytest`; 
create database `mytest`; 
use `mytest`;
drop table if exists `MyTestTable`; 
create table `MyTestTable`(`ID` int ,`Name` varchar(10));
insert into `MyTestTable`(`ID`,`Name`) 
select '1','role1' union all 
select '2','role2' union all 
select '3','role3'; 
select row_count(); -- 输出3(返回新添加的记录数),[注:如果使用insert into...values只返回1]
select from `MyTestTable`;select found_rows(); -- 输出3(返回选择的行数) 
update `MyTestTable` set `Name`='people';select row_count(); -- 输出3(返回修改的行数) 
delete from `MyTestTable`;select row_count(); -- 输出3(返回删除的行数)

function mysql_modified_rows () { 
        $info_str = mysql_info(); 
        $a_rows = mysql_affected_rows(); 
        ereg("Rows matched: ([0-9])", $info_str, $r_matched); 
        return ($a_rows < 1)?($r_matched[1]?$r_matched[1]:0):$a_rows; 
}