How can PHP developers transition from using mysql_ functions to mysqli_ or PDO for database interactions to ensure future compatibility with PHP updates and improvements?

PHP developers can transition from using mysql_ functions to mysqli_ or PDO by updating their database interaction code to use the newer mysqli_ or PDO functions. This transition is necessary to ensure compatibility with future PHP updates and improvements, as the mysql_ functions are deprecated and may be removed in future versions of PHP. 

// Before transitioning
$conn = mysql_connect('localhost', 'username', 'password');
mysql_select_db('database_name', $conn);
$result = mysql_query('SELECT * FROM table_name', $conn);

// After transitioning to mysqli_
$conn = mysqli_connect('localhost', 'username', 'password', 'database_name');
$result = mysqli_query($conn, 'SELECT * FROM table_name');

// After transitioning to PDO
$dsn = 'mysql:host=localhost;dbname=database_name';
$username = 'username';
$password = 'password';
$pdo = new PDO($dsn, $username, $password);
$stmt = $pdo->query('SELECT * FROM table_name');

Keywords

PHP mysql_ mysqli_ PDO database interactions

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