How can developers ensure their PHP code is up to date and compliant with current standards, especially regarding deprecated functions like mysql_*?

To ensure PHP code is up to date and compliant with current standards, developers should avoid using deprecated functions like mysql_* and instead switch to newer alternatives like mysqli or PDO. This involves updating existing code to use the recommended functions and methods for interacting with databases in PHP. By keeping code up to date and following best practices, developers can maintain the security and performance of their applications. 

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

// Updated mysqli example
$conn = mysqli_connect('localhost', 'username', 'password', 'database_name');
$result = mysqli_query($conn, 'SELECT * FROM table_name');

// Updated PDO example
$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 deprecated functions mysql_* compliance standards

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