How can PHP developers ensure data consistency when working with MySQL databases in a multi-user environment?

To ensure data consistency when working with MySQL databases in a multi-user environment, PHP developers can use transactions to group multiple database operations into a single unit of work. This helps maintain the integrity of the data by ensuring that either all operations succeed or none of them are applied. 

// Establish a connection to the MySQL database
$connection = new mysqli("localhost", "username", "password", "database");

// Begin a transaction
$connection->begin_transaction();

// Perform multiple database operations within the transaction
$connection->query("INSERT INTO table_name (column1, column2) VALUES ('value1', 'value2')");
$connection->query("UPDATE table_name SET column1 = 'new_value' WHERE column2 = 'value2'");

// Commit the transaction if all operations are successful
$connection->commit();

// Rollback the transaction if any operation fails
$connection->rollback();

// Close the database connection
$connection->close();

Keywords

PHP MySQL data consistency multi-user environment transactions

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