Detailed explanation of the code case of transaction rollback implemented by php PDO

This article mainly introduces the transaction rollback function implemented by php PDO, and analyzes the relevant SQL statements and related SQL statements of PDO-based transaction rollback function based on PDO operation based on specific examples. For operational skills, friends in need can refer to

. This article describes the transaction rollback implemented by php PDO. Share it with everyone for your reference, the details are as follows:

$servername="localhost";
$username="root";
$password="admin";
$dbname="test";
try{
  $conn=new PDO("mysql:host=$servername;dbname=$dbname",$username,$password);
  $conn->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
  //开始事务
  $conn->beginTransaction();
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','XIAMING','yexianming@163.com')");
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','CONG','yecong@163.com')");
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('FANG','MENG','fangmeng@168.com')");
  //提交事务
  $conn->commit();
  echo "New records created successfully!";
}catch(PDOException $e){
   //回滚事务
   $conn->rollBack();
   echo $sql."<br>".$e->getMessage();
}
$conn=NULL;

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