autocommit(FALSE);$mysqli->query("CREATE TABLE myCity LIKE City");$mysqli->query("ALTER TABLE myCity Type=InnoDB");$mysqli->query("INSERT INTO myCity SELECT * FROM City LIMIT 50");/* commit insert */$mysqli->commit();/* delete all rows */$mysqli->query("DELETE FROM myCity");if ($result = $mysqli->query("SELECT COUNT(*) FROM myCity")) {    $row = $result->fetch_row();    printf("%d rows in table myCity.\n", $row[0]);    /* Free result */    $result->close();}/* Rollback */$mysqli->rollback();if ($result = $mysqli->query("SELECT COUNT(*) FROM myCity")) {    $row = $result->fetch_row();    printf("%d rows in table myCity (after rollback).\n", $row[0]);    /* Free result */    $result->close();}/* Drop table myCity */$mysqli->query("DROP TABLE myCity");$mysqli->close();?>">

Rolls back current transaction (original) (raw)

`<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");/* check connection /
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}/* disable autocommit */ mysqli−>autocommit(FALSE);mysqli->autocommit(FALSE);mysqli−>autocommit(FALSE);mysqli->query("CREATE TABLE myCity LIKE City");
$mysqli->query("ALTER TABLE myCity Type=InnoDB");
$mysqli->query("INSERT INTO myCity SELECT * FROM City LIMIT 50");/ commit insert /
$mysqli->commit();/ delete all rows */
$mysqli->query("DELETE FROM myCity");

if ( result=result = result=mysqli->query("SELECT COUNT() FROM myCity")) { row=row = row=result->fetch_row();
printf("%d rows in table myCity.\n", $row[0]);
/ Free result /
$result->close();
}/ Rollback */
$mysqli->rollback();

if ( result=result = result=mysqli->query("SELECT COUNT() FROM myCity")) { row=row = row=result->fetch_row();
printf("%d rows in table myCity (after rollback).\n", $row[0]);
/ Free result /
$result->close();
}/ Drop table myCity */ mysqli−>query("DROPTABLEmyCity");mysqli->query("DROP TABLE myCity");mysqli−>query("DROPTABLEmyCity");mysqli->close();
?> `

`<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* check connection /
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}/ disable autocommit /
mysqli_autocommit($link, FALSE);mysqli_query($link, "CREATE TABLE myCity LIKE City");
mysqli_query($link, "ALTER TABLE myCity Type=InnoDB");
mysqli_query($link, "INSERT INTO myCity SELECT * FROM City LIMIT 50");/ commit insert /
mysqli_commit($link);/ delete all rows */
mysqli_query($link, "DELETE FROM myCity");

if ( result=mysqliquery(result = mysqli_query(result=mysqliq​uery(link, "SELECT COUNT() FROM myCity")) { row=mysqlifetchrow(row = mysqli_fetch_row(row=mysqlif​etchr​ow(result);
printf("%d rows in table myCity.\n", $row[0]);
/ Free result /
mysqli_free_result($result);
}/ Rollback */
mysqli_rollback($link);

if ( result=mysqliquery(result = mysqli_query(result=mysqliq​uery(link, "SELECT COUNT() FROM myCity")) { row=mysqlifetchrow(row = mysqli_fetch_row(row=mysqlif​etchr​ow(result);
printf("%d rows in table myCity (after rollback).\n", $row[0]);
/ Free result /
mysqli_free_result($result);
}/ Drop table myCity */
mysqli_query($link, "DROP TABLE myCity");mysqli_close($link);
?> `

0 rows in table myCity. 50 rows in table myCity (after rollback).