PHP mysqli_rollback() Function

Definition

The mysqli_rollback() function rolls back the current transaction for the specified database connection.

Syntax

PHP mysqli_rollback() Function has the following syntax.

Object oriented style

Procedural style

Parameter

• link - Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()
• flags - A bitmask of MYSQLI_TRANS_COR_* constants.
• name - If provided then ROLLBACK/*name*/ is executed.

Return

It returns TRUE on success. FALSE on failure.

Example

The mysqli_commit() function commits the current transaction for the specified database connection.

The mysqli_autocommit() function turns on or off auto-committing database.

<?php/*from w w  w.  ja va2 s.com*/
$con=mysqli_connect("localhost","my_user","my_password","my_db");
if (mysqli_connect_errno($con)){
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

// Set autocommit to off
mysqli_autocommit($con,FALSE);

// Insert some values 
mysqli_query($con,"INSERT INTO emp (name)VALUES ('Java')");
mysqli_query($con,"INSERT INTO emp (name)VALUES ('PHP')");

// Commit transaction
mysqli_commit($con);

// Rollback transaction
mysqli_rollback($con);

mysqli_close($con);
?>