Commit

In this article, we will focus on the mysqli_commit() function in PHP, which is used to commit a transaction in MySQL. We will provide you with an overview of the function, how it works, and examples of its use.

Introduction to the mysqli_commit() function

The mysqli_commit() function is a built-in function in PHP that is used to commit a transaction in MySQL. This function is useful when you need to save changes made to a database table, for example, when updating or deleting data.

How to use the mysqli_commit() function

Using the mysqli_commit() function is very simple. You just need to call the function on a valid MySQLi object. Here is an example:

<?php
$mysqli = new mysqli("localhost", "username", "password", "database");
if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: " . $mysqli->connect_error;
    exit();
}

$mysqli->autocommit(false);

// execute queries using the connection

$mysqli->commit();

$mysqli->close();
?>

In this example, we create a new MySQLi object and connect to a MySQL database with a username and password. We then disable autocommit using the autocommit() function of the MySQLi object. We can then execute queries using the connection. Finally, we commit the transaction by calling the commit() function of the MySQLi object. This saves any changes made to the database.

Advanced usage

The mysqli_commit() function can also be used in more advanced scenarios. For example, you can use the function to commit a transaction for a specific connection within a MySQL session. Here is an example:

<?php
$mysqli = new mysqli("localhost", "username", "password", "database");
if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: " . $mysqli->connect_error;
    exit();
}

$mysqli->query("START TRANSACTION");

// execute queries using the connection

$mysqli->query("COMMIT");

$mysqli->close();
?>

In this example, we create a new MySQLi object and connect to a MySQL database with a username and password. We then execute a START TRANSACTION query to begin a transaction. We can then execute queries using the connection. Finally, we commit the transaction by executing a COMMIT query. This saves any changes made to the database.

Conclusion

In conclusion, the mysqli_commit() function is a powerful tool for committing transactions in MySQL in PHP. By understanding how to use the function and its advanced usage scenarios, you can take advantage of this feature to save changes made to a database and create powerful and flexible MySQL queries in your PHP scripts.