How to turn this SQL Query into PDO Transaction without Errors - php

Question

I have this SQL Query:
BEGIN;
INSERT INTO users (username, password)
VALUES('alpha', 'omega');
INSERT INTO profiles (userid, cv, website)
VALUES(LAST_INSERT_ID(),'some cv things', 'www.domain.com');
COMMIT;
And I want to use PDO instead of the MYSQL Transcation so I can pull the catched error Because I don't get it from the MYSQL Transaction, What I've tried was
$dbh->beginTransaction();
try {
$stmt = $dbh->prepare("
INSERT INTO users (username, password)
VALUES('alpha', 'omega');
INSERT INTO profiles (userid, cv, website)
VALUES(LAST_INSERT_ID(),'some cv things', 'www.domain.com');
");
$stmt->execute();
$dbh->commit();
} catch (PDOException $e) {
$dbh->rollback();
throw $e;
}
But I kept getting this Error
Uncaught PDOException: There is no active transaction . . . PDO->rollBack() #1 {main} thrown
The reocrds were INSERTed into the Table, But the error kept being shown too.
I've tried using $dbh->setAttribute(PDO::ATTR_AUTOCOMMIT, FALSE); but still got the Error message.
Then tried to remove try-catch and kept the Query with the PDO Transactions and got this Error message
Uncaught PDOException: There is no active transaction . . . PDO->commit() #1 {main} thrown

Answer 1

You're throwing the exception in your error handler:
catch (PDOException $e) {
$dbh->rollback();
throw $e; // <-- right here
}
That will cause the exception to keep going until it's handled, and if it's not handled it will throw a fatal error:
When an exception is thrown, code following the statement will not be executed, and PHP will attempt to find the first matching catch block. If an exception is not caught, a PHP Fatal Error will be issued with an "Uncaught Exception ..." message, unless a handler has been defined with set_exception_handler().
If your exception handler is completely handling the exception you should remove that line.

Answer 2

you're not passing any params do it like this:
try {
$stmt = $dbh->exec('
INSERT INTO `users` (`username`, `password`)
VALUES("alpha", "omega");
');
$stmt_2 = $dbh->exec('
INSERT INTO `profiles` (`userid`, `cv`, `website`)
VALUES(LAST_INSERT_ID(), "some cv things", "www.domain.com");
');
} catch (PDOException $e) {
$dbh->rollback();
throw $e;
}
this will execute the query - you don't need to prepare because you're already escaping your strings so a simple $dbh->exec will do the trick :)