What resources are available for learning about PHP function deprecation and best practices?

PHP function deprecation occurs when a function is marked as outdated or no longer recommended for use in newer versions of PHP. To learn about PHP function deprecation and best practices, developers can refer to the official PHP documentation, online tutorials, forums, and community resources. It is important to stay updated on the latest PHP versions and changes to ensure code compatibility and maintain best practices.

// Example of using a deprecated function in PHP
$deprecatedVar = mysql_connect('localhost', 'username', 'password');

// Updated code using mysqli_connect instead of deprecated mysql_connect
$updatedVar = mysqli_connect('localhost', 'username', 'password');