What are the best practices for transitioning from mysql_* to mysqli_* or PDO in PHP for database operations?

When transitioning from mysql_* functions to mysqli_* or PDO in PHP for database operations, it is important to update your code to use prepared statements to prevent SQL injection attacks and improve security. Additionally, make sure to handle errors properly and close database connections when they are no longer needed. 

// Connect to the database using mysqli
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check connection
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Prepare a statement
$stmt = $mysqli->prepare("SELECT * FROM table WHERE column = ?");
$stmt->bind_param("s", $value);

// Execute the statement
$stmt->execute();

// Bind the results
$stmt->bind_result($result);

// Fetch the results
$stmt->fetch();

// Close the statement
$stmt->close();

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

Keywords

mysql_* mysqli_* PDO database operations PHP

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