How can PHP developers ensure data integrity when transferring data between tables?

To ensure data integrity when transferring data between tables in PHP, developers can use transactions. By wrapping the data transfer process in a transaction, they can guarantee that either all the data is successfully transferred or none of it is, preventing partial or incorrect data transfers. 

// Establish a database connection
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Begin a transaction
$pdo->beginTransaction();

try {
    // Perform data transfer between tables
    $pdo->exec("INSERT INTO new_table SELECT * FROM old_table");

    // Commit the transaction if no errors occur
    $pdo->commit();
} catch (PDOException $e) {
    // Rollback the transaction if an error occurs
    $pdo->rollBack();
    echo "Error transferring data: " . $e->getMessage();
}

Keywords

PHP data integrity data transfer SQL injection prepared statements

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