How can one avoid receiving error messages when using outdated PHP functions?

When using outdated PHP functions, it is important to update the code to use newer, supported functions to avoid receiving error messages. To solve this issue, you can check the PHP documentation for deprecated functions and find their recommended replacements. By updating your code to use the newer functions, you can ensure that your application runs smoothly without encountering any errors.

// Before updating outdated PHP function
$oldResult = mysql_query($query);

// After updating to newer, supported function
$newResult = mysqli_query($connection, $query);