Creating an instance of a specific class with a database result

…We've seen how to set the properties of an…existing PHP object from the result of a select query.…PDO can also create a new object and set its properties, but you need to be…careful that default values in the object constructor…don't overwrite the values from the database result.…We'll use the same Car class as in the previous video.…And the script in fetch_class.php is also very similar.…The only difference is that we're not actually creating an object beforehand.…

We're going to use the results of the database query to create our new object.…Incidentally, you can find both of these files in…the chapter four, 04_03 folder of the exercise files.…So, we've got a prepared statement that is selecting…values from the cars database and it's using car_id.…That's got a question mark as the placeholder.…We then prepare the statement and then we execute the statement,…parsing at the value of car_id, which is bound to that placeholder.…So, we can now use the database result to…create an instance of the object that we want.…