PHP PDO 增删查改，表锁，返回新增ID

环境

IIS7.5

PHP5.4

MYSQL5.5.34

query("set character set 'UTF8'");




//表加锁
$sth=$db->exec("LOCK TABLE 2017_06_nnfp WRITE");


//查询数据
$sql = "SELECT * FROM 2017_06_nnfp";
$sth = $db->query($sql);
while($row = $sth->fetch()){
    echo "openid:".$row['openid']."
";
    echo "奖品:".$row['prizename']."
";
    echo "日期:".$row['day']."
";
}


//修改
$sql="update 2017_06_nnfp_prize set dx50m=10 where id = 1";
$sth=$db->exec($sql);




//删除
$sql="delete from 2017_06_nnfp where id=74";
$sth=$db->exec($sql);




//新增
$sql="insert into 2017_06_nnfp (openid,prize,prizename) values ('q123456789','3','手机')";
$sth=$db->exec($sql);

//返回最后增加的ID
echo $db->lastInsertId()  



//表解锁
$sth=$db->exec("UNLOCK TABLE");

$db = null;

?>