国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

<?php

$pdo=new PDO('mysql:host=localhost;dbname=student','root','root');

try{

$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$pdo->beginTransaction();

//The first sql statement

$sqla="delete from chen where id=14";

$pdo->exec($sqla) ;

//The sql statement on the second day

$sqlb="delete froms chen where id=15"; //The from is written incorrectly on purpose

$pdo->exec($sqlb);

}catch(Exception $e){

$pdo ->rollBack();

$e->getMessage();

echo "Operation failed";

}

?>