How can the deprecated mysql functions be replaced with mysqli functions for improved security and performance in PHP?

The deprecated mysql functions in PHP should be replaced with mysqli functions for improved security and performance. This is because mysqli functions offer better support for prepared statements, transactions, and improved error handling compared to the older mysql functions. To replace mysql functions with mysqli functions, simply update the function calls and parameters accordingly. 

// Deprecated mysql function
$connection = mysql_connect('localhost', 'username', 'password');
mysql_select_db('database_name', $connection);
$result = mysql_query('SELECT * FROM table_name', $connection);

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

Keywords

deprecated mysql functions mysqli functions security performance

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