交易不适用于php，mysql

Question

I was just trying transaction with php. But does not working. here is the code

$conn = mysql_connect('localhost', 'root', '') or die (mysql_error());
mysql_select_db('users',$conn) or die (mysql_error());
$sql = 'INSERT INTO `login` (id ,username ,password ,isactive)VALUES (3,  "rtyer",  "edt6e4",  "y");';
$sql1 = 'INSERT INTO `user` (
            `f_name` ,
            `l_name` ,
            `age` ,
            `place` ,
            `loginid`
            )
            VALUES (
            3,  "dsgdhg",  "yuity",  45,  "fj",  3
            );';
mysql_query("SET autocommit = off");
mysql_query("BEGIN");
mysql_query("START TRANSACTION");
$result1 = mysql_query( $sql, $conn );
$result2 = mysql_query( $sql1, $conn );
if(!$result2)
{
mysql_query("ROLLBACK");
echo "transaction rolled back";
exit;
}
else
{
mysql_query("COMMIT");
echo "Database transaction was successful";
}
mysql_close($conn);

there is mistake in the sql1 so data is not inserting into user table but rollbacking from the login table. Its entering into the if block but rollback is not occuring. Whats the problem here?

Answer 1

Delete the extra semi-colon at this line and use double quotes and single quotes on values:

$sql = 'INSERT INTO login (id ,username ,password ,isactive)VALUES (3, "rtyer", "edt6e4", "y");'; <--- this part

Into this and do the same to $sql1

$sql = "INSERT INTO login (id ,username ,password ,isactive)VALUES ('3', 'rtyer', 'edt6e4', 'y')"; <-- deleted semi-colon

$sql1 = "INSERT INTO `user` (
            `f_name` ,
            `l_name` ,
            `age` ,
            `place` ,
            `loginid`
            )
            VALUES (
            '3',  'dsgdhg',  'yuity',  '45',  'fj',  '3'
            )";

Answer 2

Transaction will work only in InnoDB. here it was MyISAM.